Updated 6 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,762exploited flaws on CISA’s list

34added in the last 30 days

344new WordPress flaws this week

390,080entries in the database

27 results

Oct 14, 2026Cisco Secure Email Gateway Relative Path Traversal VulnerabilityCVE-2026-76519 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 9.8
Cisco Secure Email Gateway contains a relative path traversal vulnerability that could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system.
Product
Secure Email Gateway
On CISA’s list since
Oct 14, 2026 (federal fix deadline Oct 17, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Oct 1, 2026Fortinet FortiMail Path Traversal VulnerabilityCVE-2026-104286 · Network & remote access · Fortinet · reported by psirt@fortinet.comExploitedCritical 9.8
An improper limitation of a pathname to a restricted directory ('path traversal') vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2.0 through 7.2.9, FortiMail 7.0 all versions may allow an unauthenticated attacker to write arbitrary files on the underlying system via crafted HTTP or HTTPS requests.
Product
FortiMail
On CISA’s list since
Oct 1, 2026 (federal fix deadline Oct 4, 2026)
What to do
Attackers are using this now. Install Fortinet’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog fortiguard.fortinet.com cisa.gov
Sep 14, 2026Cisco Secure Email Gateway SQL Injection VulnerabilityCVE-2026-76461 · Network & remote access · Cisco · reported by psirt@cisco.comExploitedCritical 9.8
Cisco AsyncOS software for Cisco Secure Email Gateway (SEG) contains a SQL injection vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system.
Product
Secure Email Gateway
On CISA’s list since
Sep 14, 2026 (federal fix deadline Sep 17, 2026)
What to do
Attackers are using this now. Install Cisco’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog sec.cloudapps.cisco.com cisa.gov
Feb 20, 2026RoundCube Webmail Deserialization of Untrusted Data VulnerabilityCVE-2025-49113 · Websites & servers · Roundcube · reported by MITREExploitedCritical 9.9
RoundCube Webmail contains a deserialization of untrusted data vulnerability that allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php.
Product
Webmail
On CISA’s list since
Feb 20, 2026 (federal fix deadline Mar 13, 2026)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog fearsoff.org github.com
Feb 20, 2026RoundCube Webmail Cross-site Scripting VulnerabilityCVE-2025-68461 · Websites & servers · Roundcube · reported by MITREExploitedHigh 7.2
RoundCube Webmail contains a cross-site scripting vulnerability via the animate tag in an SVG document.
Product
Webmail
On CISA’s list since
Feb 20, 2026 (federal fix deadline Mar 13, 2026)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com roundcube.net
Feb 5, 2026SmarterTools SmarterMail Missing Authentication for Critical Function VulnerabilityCVE-2026-24423 · Other software · SmarterTools · reported by VulnCheckExploitedRansomwareCritical 9.3
SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution.
Product
SmarterMail
On CISA’s list since
Feb 5, 2026 (federal fix deadline Feb 26, 2026)
What to do
Attackers are using this now. Install SmarterTools’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog code-white.com smartertools.com
Jan 26, 2026SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type VulnerabilityCVE-2025-52691 · Other software · SmarterTools · reported by 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4ExploitedRansomwareCritical 10
SmarterTools SmarterMail contains an unrestricted upload of file with dangerous type vulnerability that could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code execution.
Product
SmarterMail
On CISA’s list since
Jan 26, 2026 (federal fix deadline Feb 16, 2026)
What to do
Attackers are using this now. Install SmarterTools’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog csa.gov.sg github.com
Jan 26, 2026SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel VulnerabilityCVE-2026-23760 · Other software · SmarterTools · reported by VulnCheckExploitedRansomwareCritical 9.3
SmarterTools SmarterMail contains an authentication bypass using an alternate path or channel vulnerability in the password reset API. The force-reset-password endpoint permits anonymous requests and fails to verify the existing password or a reset token when resetting system administrator accounts. This could allow an unauthenticated attacker to supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance.
Product
SmarterMail
On CISA’s list since
Jan 26, 2026 (federal fix deadline Feb 16, 2026)
What to do
Attackers are using this now. Install SmarterTools’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog code-white.com labs.watchtowr.com
Sep 29, 2025Libraesva Email Security Gateway Command Injection VulnerabilityCVE-2025-59689 · Other software · Libraesva · reported by MITREExploitedMedium 6.1
Libraesva Email Security Gateway (ESG) contains a command injection vulnerability which allows command injection via a compressed e-mail attachment.
Product
Email Security Gateway
On CISA’s list since
Sep 29, 2025 (federal fix deadline Oct 20, 2025)
What to do
Attackers are using this now. Install Libraesva’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog docs.libraesva.com libraesva.com
Jul 7, 2025PHPMailer Command Injection VulnerabilityCVE-2016-10033 · Websites & servers · PHP · reported by MITREExploitedCritical 9.8
PHPMailer contains a command injection vulnerability because it fails to sanitize user-supplied input. Specifically, this issue affects the 'mail()' function of 'class.phpmailer.php' script. An attacker can exploit this issue to execute arbitrary code within the context of the application. Failed exploit attempts will result in a denial-of-service condition.
Product
PHPMailer
On CISA’s list since
Jul 7, 2025 (federal fix deadline Jul 28, 2025)
What to do
Attackers are using this now. Install PHP’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com packetstormsecurity.com
Jun 9, 2025RoundCube Webmail Cross-Site Scripting VulnerabilityCVE-2024-42009 · Websites & servers · Roundcube · reported by MITREExploitedCritical 9.3
RoundCube Webmail contains a cross-site scripting vulnerability. This vulnerability could allow a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php.
Product
Webmail
On CISA’s list since
Jun 9, 2025 (federal fix deadline Jun 30, 2025)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com github.com
May 19, 2025MDaemon Email Server Cross-Site Scripting (XSS) VulnerabilityCVE-2024-11182 · Other software · MDaemon · reported by security@eset.comExploitedMedium 5.3
MDaemon Email Server contains a cross-site scripting (XSS) vulnerability that allows a remote attacker to load arbitrary JavaScript code via an HTML e-mail message.
Product
Email Server
On CISA’s list since
May 19, 2025 (federal fix deadline Jun 9, 2025)
What to do
Attackers are using this now. Install MDaemon’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog files.mdaemon.com cisa.gov
Apr 28, 2025Qualitia Active! Mail Stack-Based Buffer Overflow VulnerabilityCVE-2025-42599 · Other software · Qualitia · reported by vultures@jpcert.or.jpExploitedCritical 9.8
Qualitia Active! Mail contains a stack-based buffer overflow vulnerability that allows a remote, unauthenticated attacker to execute arbitrary or trigger a denial-of-service via a specially crafted request.
Product
Active! Mail
On CISA’s list since
Apr 28, 2025 (federal fix deadline May 19, 2025)
What to do
Attackers are using this now. Install Qualitia’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog jvn.jp qualitia.com
Oct 24, 2024RoundCube Webmail Cross-Site Scripting (XSS) VulnerabilityCVE-2024-37383 · Websites & servers · Roundcube · reported by MITREExploitedMedium 6.1
RoundCube Webmail contains a cross-site scripting (XSS) vulnerability in the handling of SVG animate attributes that allows a remote attacker to run malicious JavaScript code.
Product
Webmail
On CISA’s list since
Oct 24, 2024 (federal fix deadline Nov 14, 2024)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com github.com
Jun 26, 2024Roundcube Webmail Cross-Site Scripting (XSS) VulnerabilityCVE-2020-13965 · Websites & servers · Roundcube · reported by MITREExploitedMedium 6.1
Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows a remote attacker to manipulate data via a malicious XML attachment.
Product
Webmail
On CISA’s list since
Jun 26, 2024 (federal fix deadline Jul 17, 2024)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com github.com
Feb 12, 2024Roundcube Webmail Persistent Cross-Site Scripting (XSS) VulnerabilityCVE-2023-43770 · Websites & servers · Roundcube · reported by MITREExploitedMedium 6.1
Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that can lead to information disclosure via malicious link references in plain/text messages.
Product
Webmail
On CISA’s list since
Feb 12, 2024 (federal fix deadline Mar 4, 2024)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog github.com lists.debian.org
Oct 26, 2023Roundcube Webmail Persistent Cross-Site Scripting (XSS) VulnerabilityCVE-2023-5631 · Websites & servers · Roundcube · reported by security@eset.comExploitedMedium 6.1
Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.
Product
Webmail
On CISA’s list since
Oct 26, 2023 (federal fix deadline Nov 16, 2023)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog openwall.com openwall.com
Jun 22, 2023Roundcube Webmail Cross-Site Scripting (XSS) VulnerabilityCVE-2020-35730 · Websites & servers · Roundcube · reported by MITREExploitedMedium 6.1
Roundcube Webmail contains a cross-site scripting (XSS) vulnerability that allows an attacker to send a plain text e-mail message with Javascript in a link reference element that is mishandled by linkref_addinindex in rcube_string_replacer.php.
Product
Roundcube Webmail
On CISA’s list since
Jun 22, 2023 (federal fix deadline Jul 13, 2023)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog bugs.debian.org github.com
Jun 22, 2023Roundcube Webmail Remote Code Execution VulnerabilityCVE-2020-12641 · Websites & servers · Roundcube · reported by MITREExploitedCritical 9.8
Roundcube Webmail contains an remote code execution vulnerability that allows attackers to execute code via shell metacharacters in a configuration setting for im_convert_path or im_identify_path.
Product
Roundcube Webmail
On CISA’s list since
Jun 22, 2023 (federal fix deadline Jul 13, 2023)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog lists.opensuse.org github.com
Jun 22, 2023Roundcube Webmail SQL Injection VulnerabilityCVE-2021-44026 · Websites & servers · Roundcube · reported by MITREExploitedCritical 9.8
Roundcube Webmail is vulnerable to SQL injection via search or search_params.
Product
Roundcube Webmail
On CISA’s list since
Jun 22, 2023 (federal fix deadline Jul 13, 2023)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog bugs.debian.org github.com
May 26, 2023Barracuda Networks ESG Appliance Improper Input Validation VulnerabilityCVE-2023-2868 · Network & remote access · Barracuda Networks · reported by cve-coordination@google.comExploitedCritical 9.4
Barracuda Email Security Gateway (ESG) appliance contains an improper input validation vulnerability of a user-supplied .tar file, leading to remote command injection.
Product
Email Security Gateway (ESG) Appliance
On CISA’s list since
May 26, 2023 (federal fix deadline Jun 16, 2023)
What to do
Attackers are using this now. Install Barracuda Networks’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog status.barracuda.com barracuda.com
Mar 3, 2022Exim Out-of-bounds Write VulnerabilityCVE-2019-16928 · Other software · Exim · reported by MITREExploitedCritical 9.8
Exim contains an out-of-bounds write vulnerability which can allow for remote code execution.
Product
Exim Internet Mailer
On CISA’s list since
Mar 3, 2022 (federal fix deadline Mar 17, 2022)
What to do
Attackers are using this now. Install Exim’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog openwall.com openwall.com
Jan 10, 2022Exim Mail Transfer Agent (MTA) Improper Input ValidationCVE-2019-10149 · Other software · Exim · reported by Red HatExploitedCritical 9.8
Improper validation of recipient address in deliver_message() function in /src/deliver.c may lead to remote command execution.
Product
Mail Transfer Agent (MTA)
On CISA’s list since
Jan 10, 2022 (federal fix deadline Jul 10, 2022)
What to do
Attackers are using this now. Install Exim’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog lists.opensuse.org packetstormsecurity.com
Nov 3, 2021Roundcube Webmail File Disclosure VulnerabilityCVE-2017-16651 · Websites & servers · Roundcube · reported by MITREExploitedHigh 7.8
Roundcube Webmail contains a file disclosure vulnerability caused by insufficient input validation in conjunction with file-based attachment plugins, which are used by default.
Product
Roundcube Webmail
On CISA’s list since
Nov 3, 2021 (federal fix deadline May 3, 2022)
What to do
Attackers are using this now. Install Roundcube’s update today. If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog packetstormsecurity.com securityfocus.com
Nov 3, 2021SonicWall Email Security Improper Privilege Management VulnerabilityCVE-2021-20021 · Network & remote access · SonicWall · reported by PSIRT@sonicwall.comExploitedRansomwareCritical 9.8
SonicWall Email Security contains an improper privilege management vulnerability that allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20022 and CVE-2021-20023 to achieve privilege escalation.
Product
SonicWall Email Security
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install SonicWall’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog psirt.global.sonicwall.com psirt.global.sonicwall.com
Nov 3, 2021SonicWall Email Security Unrestricted Upload of File VulnerabilityCVE-2021-20022 · Network & remote access · SonicWall · reported by PSIRT@sonicwall.comExploitedRansomwareHigh 7.2
SonicWall Email Security contains an unrestricted upload of file with dangerous type vulnerability that allows a post-authenticated attacker to upload a file to the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20023 to achieve privilege escalation.
Product
SonicWall Email Security
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install SonicWall’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog psirt.global.sonicwall.com psirt.global.sonicwall.com
Nov 3, 2021SonicWall Email Security Path Traversal VulnerabilityCVE-2021-20023 · Network & remote access · SonicWall · reported by PSIRT@sonicwall.comExploitedRansomwareMedium 4.9
SonicWall Email Security contains a path traversal vulnerability that allows a post-authenticated attacker to read files on the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20022 to achieve privilege escalation.
Product
SonicWall Email Security
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install SonicWall’s update today (ransomware groups use this one). If there is no update for your version, take the product off the internet or stop using it until there is.
Full record and what to do →NVD record CISA catalog psirt.global.sonicwall.com psirt.global.sonicwall.com

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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Vulnerability database

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