Updated 4 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

324new WordPress flaws this week

390,007entries in the database

13 results

May 20, 2026Adobe Acrobat and Reader Heap-Based Buffer Overflow VulnerabilityCVE-2009-3459 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Adobe Acrobat and Reader contain a heap-based buffer overflow vulnerability which could allow remote attackers to execute arbitrary code via a crafted PDF file that triggers memory corruption.
Product
Acrobat and Reader
On CISA’s list since
May 20, 2026 (federal fix deadline Jun 3, 2026)
What to do
Attackers are using this now. Install Adobe’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 blogs.adobe.com isc.sans.org
Apr 13, 2026Adobe Acrobat and Reader Prototype Pollution VulnerabilityCVE-2026-34621 · Email & office · Adobe · reported by AdobeExploitedHigh 8.6
Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution.
Product
Acrobat and Reader
On CISA’s list since
Apr 13, 2026 (federal fix deadline Apr 27, 2026)
What to do
Attackers are using this now. Install Adobe’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 helpx.adobe.com cisa.gov
Oct 10, 2023Adobe Acrobat and Reader Use-After-Free VulnerabilityCVE-2023-21608 · Email & office · Adobe · reported by AdobeExploitedHigh 7.8
Adobe Acrobat and Reader contains a use-after-free vulnerability that allows for code execution in the context of the current user.
Product
Acrobat and Reader
On CISA’s list since
Oct 10, 2023 (federal fix deadline Oct 31, 2023)
What to do
Attackers are using this now. Install Adobe’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 helpx.adobe.com helpx.adobe.com
Sep 14, 2023Adobe Acrobat and Reader Out-of-Bounds Write VulnerabilityCVE-2023-26369 · Email & office · Adobe · reported by AdobeExploitedHigh 7.8
Adobe Acrobat and Reader contains an out-of-bounds write vulnerability that allows for code execution.
Product
Acrobat and Reader
On CISA’s list since
Sep 14, 2023 (federal fix deadline Oct 5, 2023)
What to do
Attackers are using this now. Install Adobe’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 helpx.adobe.com helpx.adobe.com
Jun 8, 2022Adobe Acrobat and Reader Buffer Overflow VulnerabilityCVE-2007-5659 · Email & office · Adobe · reported by MITREExploitedHigh 7.8
Adobe Acrobat and Reader contain a buffer overflow vulnerability that allows remote attackers to execute code via a PDF file with long arguments to unspecified JavaScript methods.
Product
Acrobat and Reader
On CISA’s list since
Jun 8, 2022 (federal fix deadline Jun 22, 2022)
What to do
Attackers are using this now. Install Adobe’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 labs.idefense.com secunia.com
Jun 8, 2022Adobe Acrobat and Reader Unspecified VulnerabilityCVE-2008-0655 · Email & office · Adobe · reported by MITREExploitedHigh 8.8
Adobe Acrobat and Reader contains an unespecified vulnerability described as a design flaw which could allow a specially crafted file to be printed silently an arbitrary number of times.
Product
Acrobat and Reader
On CISA’s list since
Jun 8, 2022 (federal fix deadline Jun 22, 2022)
What to do
Attackers are using this now. Install Adobe’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 blogs.adobe.com kb.adobe.com
Jun 8, 2022Adobe Acrobat and Reader Double Free VulnerabilityCVE-2018-4990 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Adobe Acrobat and Reader have a double free vulnerability that could lead to remote code execution.
Product
Acrobat and Reader
On CISA’s list since
Jun 8, 2022 (federal fix deadline Jun 22, 2022)
What to do
Attackers are using this now. Install Adobe’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 securityfocus.com securitytracker.com
Jun 8, 2022Adobe Acrobat and Reader Stack-Based Buffer Overflow VulnerabilityCVE-2010-2883 · Email & office · Adobe · reported by AdobeExploitedHigh 7.3
Adobe Acrobat and Reader contain a stack-based buffer overflow vulnerability that allows remote attackers to execute code or cause denial-of-service (DoS).
Product
Acrobat and Reader
On CISA’s list since
Jun 8, 2022 (federal fix deadline Jun 22, 2022)
What to do
Attackers are using this now. Install Adobe’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 blog.metasploit.com community.websense.com
Jun 8, 2022Adobe Acrobat and Reader Use-After-Free VulnerabilityCVE-2009-4324 · Email & office · Adobe · reported by AdobeExploitedHigh 7.8
Use-after-free vulnerability in Adobe Acrobat and Reader allows remote attackers to execute code via a crafted PDF file.
Product
Acrobat and Reader
On CISA’s list since
Jun 8, 2022 (federal fix deadline Jun 22, 2022)
What to do
Attackers are using this now. Install Adobe’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 blogs.adobe.com contagiodump.blogspot.com
Jun 8, 2022Adobe Acrobat and Reader Universal 3D Remote Code Execution VulnerabilityCVE-2009-3953 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Adobe Acrobat and Reader contains an array boundary issue in Universal 3D (U3D) support that could lead to remote code execution.
Product
Acrobat and Reader
On CISA’s list since
Jun 8, 2022 (federal fix deadline Jun 22, 2022)
What to do
Attackers are using this now. Install Adobe’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 osvdb.org
Jun 8, 2022Adobe Acrobat and Reader, Flash Player Unspecified VulnerabilityCVE-2009-1862 · Email & office · Adobe · reported by MITREExploitedHigh 7.8
Adobe Acrobat and Reader and Adobe Flash Player allows remote attackers to execute code or cause denial-of-service (DoS).
Product
Acrobat and Reader, Flash Player
On CISA’s list since
Jun 8, 2022 (federal fix deadline Jun 22, 2022)
What to do
Attackers are using this now. Install Adobe’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 blogs.adobe.com bugs.adobe.com
Nov 3, 2021Adobe Acrobat and Reader Heap-based Buffer Overflow VulnerabilityCVE-2021-21017 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Acrobat Acrobat and Reader contain a heap-based buffer overflow vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.
Product
Acrobat and Reader
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Adobe’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 helpx.adobe.com helpx.adobe.com
Nov 3, 2021Adobe Acrobat and Reader Use-After-Free VulnerabilityCVE-2021-28550 · Email & office · Adobe · reported by AdobeExploitedHigh 8.8
Adobe Acrobat and Reader contains a use-after-free vulnerability that could allow an unauthenticated attacker to achieve code execution in the context of the current user.
Product
Acrobat and Reader
On CISA’s list since
Nov 3, 2021 (federal fix deadline Nov 17, 2021)
What to do
Attackers are using this now. Install Adobe’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 helpx.adobe.com helpx.adobe.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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