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.
21 results
Oct 13, 2026Epic Games Unreal Engine versions up to and including 5.8.0 ship with an insecure default configuration for the LaunchURL Blueprint node (UKismetSystemLibrary::CVE-2026-14765 · Other software · Epic Games · reported by cve@takeonme.orgHigh 7.7
Epic Games Unreal Engine versions up to and including 5.8.0 ship with an insecure default configuration for the LaunchURL Blueprint node (UKismetSystemLibrary::LaunchURL). The URL scheme filter (FURLRequestFilter) is empty by default, which permits all URL schemes. On Windows, this results in a call to ShellExecuteW() with the open verb, so a supplied file:/// URI causes the referenced file to be executed. Any Unreal Engine game that loads user-generated content containing Blueprints is vulnerable to command execution via a malicious local file or a remote file on a WebDAV share. This is an instance of CWE-1188 (Initialization of a Resource with an Insecure Default).
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkhaelkugler.comtakeonme.org
Apr 21, 2026blueprintUE is a tool to help Unreal Engine developers.CVE-2026-40588 · Other software · blueprintue · reported by GitHubHigh 8.1
blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, the password change form at /profile/{slug}/edit/ does not include a current_password field and does not verify the user's existing password before accepting a new one. Any attacker who obtains a valid authenticated session — through XSS exploitation, session sidejacking over HTTP, physical access to a logged-in browser, or a stolen "remember me" cookie — can immediately change the account password without knowing the original credential, resulting in permanent account takeover. This vulnerability is fixed in 4.2.0.
- Product
- blueprintue-self-hosted-edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 21, 2026blueprintUE is a tool to help Unreal Engine developers.CVE-2026-40587 · Other software · blueprintue · reported by GitHubMedium 6.5
blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a user changes their password via the profile edit page, or when a password reset is completed via the reset link, neither operation invalidates existing authenticated sessions for that user. A server-side session store associates userID → session; the current password change/reset flow updates only the password column in the users table and does not destroy or mark invalid any active sessions. As a result, an attacker who has already compromised a session retains full access to the account indefinitely — even after the legitimate user has detected the intrusion and changed their password — until the session's natural expiry time (configured as SESSION_GC_MAXLIFETIME, defaulting to 86400 seconds / 24 hours, with SESSION_LIFETIME=0 meaning persistent until browser close or GC, whichever is later). This vulnerability is fixed in 4.2.0.
- Product
- blueprintue-self-hosted-edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 21, 2026blueprintUE is a tool to help Unreal Engine developers.CVE-2026-40586 · Other software · blueprintue · reported by GitHubHigh 7.5
blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, the login form handler performs no throttling of any kind. Failed authentication attempts are processed at full network speed with no IP-based rate limiting, no per-account attempt counter, no temporary lockout, no progressive delay (Tarpit), and no CAPTCHA challenge. An attacker can submit an unlimited number of credential guesses. The password policy (10+ characters, mixed case, digit, special character) reduces the effective keyspace but does not prevent dictionary attacks, credential stuffing from breached databases, or targeted attacks against known users with predictable passwords. This vulnerability is fixed in 4.2.0.
- Product
- blueprintue-self-hosted-edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 21, 2026blueprintUE is a tool to help Unreal Engine developers.CVE-2026-40585 · Other software · blueprintue · reported by GitHubHigh 7.4
blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a password reset is initiated, a 128-character CSPRNG token is generated and stored alongside a password_reset_at timestamp. However, the token redemption function findUserIDFromEmailAndToken() queries only for a matching email + password_reset token pair — it does not check whether the password_reset_at timestamp has elapsed any maximum window. A generated reset token is valid indefinitely until it is explicitly consumed or overwritten by a subsequent reset request. This vulnerability is fixed in 4.2.0.
- Product
- blueprintue-self-hosted-edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jul 10, 2019An issue was discovered in the America's Army Proving Grounds platform for the Unreal Engine.CVE-2018-10531 · Other software · Americasarmy · reported by MITREHigh 7.5
An issue was discovered in the America's Army Proving Grounds platform for the Unreal Engine. With a false packet sent via UDP, the application server responds with several bytes, giving the possibility of DoS amplification, even being able to be used in DDoS attacks.
- Product
- Proving Grounds
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordxlabs.com.brxlabs.com.br
Jul 12, 2010Buffer overflow in the UGameEngine::UpdateConnectingMessage function in the Unreal engine 1, 2, and 2.5, as used in multiple games including Unreal Tournament 2CVE-2010-2702 · Other software · Epicgames · reported by MITREHigh 9.3
Buffer overflow in the UGameEngine::UpdateConnectingMessage function in the Unreal engine 1, 2, and 2.5, as used in multiple games including Unreal Tournament 2004, Unreal tournament 2003, Postal 2, Raven Shield, and SWAT4, when downloads are enabled, allows remote attackers to execute arbitrary code via a long LEVEL field in a WELCOME response to a download request.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgaluigi.org
Aug 19, 2009Unreal engine 3, as used in Unreal Tournament 3 1.3, Frontlines: Fuel of War 1.1.1, and other products, allows remote attackers to cause a denial of service (seCVE-2008-7015 · Other software · Epic Games · reported by MITREMedium 5
Unreal engine 3, as used in Unreal Tournament 3 1.3, Frontlines: Fuel of War 1.1.1, and other products, allows remote attackers to cause a denial of service (server exit) via a packet with a large length value that triggers a memory allocation failure.
- Product
- Unreal Tournament
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comosvdb.org
Aug 19, 2009The Unreal engine, as used in Unreal Tournament 3 1.3, Unreal Tournament 2003 and 2004, Dead Man's Hand, Pariah, WarPath, Postal2, and Shadow Ops, allows remoteCVE-2008-7011 · Other software · Digital Extreme · reported by MITREMedium 4
The Unreal engine, as used in Unreal Tournament 3 1.3, Unreal Tournament 2003 and 2004, Dead Man's Hand, Pariah, WarPath, Postal2, and Shadow Ops, allows remote authenticated users to cause a denial of service (server exit) via multiple file downloads from the server, which triggers an assertion failure when the Closing flag in UnChan.cpp is set.
- Product
- Pariah
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comosvdb.org
Mar 9, 2009Format string vulnerability in the Epic Games Unreal engine client, as used in multiple games, allows remote servers to execute arbitrary code via (1) the CLASSCVE-2008-6441 · Other software · Epicgames · reported by MITREHigh 9.3
Format string vulnerability in the Epic Games Unreal engine client, as used in multiple games, allows remote servers to execute arbitrary code via (1) the CLASS parameter in a DLMGR command, (2) a malformed package (PKG), and possibly (3) the LEVEL parameter in a WELCOME command.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgarchives.neohapsis.com
Oct 6, 2007The Windows dedicated server for the Unreal engine, as used by America's Army and America's Army Special Forces 2.8.2 and earlier, when Punkbuster (PB) is enablCVE-2007-5250 · Other software · Americasarmy · reported by MITREMedium 4.3
The Windows dedicated server for the Unreal engine, as used by America's Army and America's Army Special Forces 2.8.2 and earlier, when Punkbuster (PB) is enabled, allows remote attackers to cause a denial of service (server hang) via packets containing 0x07 characters or other unspecified invalid characters. NOTE: this issue may overlap CVE-2007-4443. NOTE: this issue might be in Punkbuster itself, but there are insufficient details to be certain.
- Product
- America's Army
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgaluigi.org
Oct 6, 2007Multiple buffer overflows in the logging function in the Unreal engine, as used by America's Army and America's Army Special Forces 2.8.2 and earlier, when PunkCVE-2007-5249 · Other software · Americasarmy · reported by MITREMedium 4.3
Multiple buffer overflows in the logging function in the Unreal engine, as used by America's Army and America's Army Special Forces 2.8.2 and earlier, when Punkbuster (PB) is enabled, allow remote attackers to cause a denial of service (daemon crash) via a long (1) PB_Y packet to the YPG server on UDP port 1716 or (2) PB_U packet to UCON on UDP port 1716, different vectors than CVE-2007-4442. NOTE: this issue might be in Punkbuster itself, but there are insufficient details to be certain.
- Product
- America's Army
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgaluigi.org
Aug 20, 2007The UCC dedicated server for the Unreal engine, possibly 2003 and 2004, on Windows allows remote attackers to cause a denial of service (continuous beep and serCVE-2007-4443 · Other software · Epic Games · reported by MITREMedium 5
The UCC dedicated server for the Unreal engine, possibly 2003 and 2004, on Windows allows remote attackers to cause a denial of service (continuous beep and server slowdown) via a string containing many 0x07 characters in (1) a request to the images/ directory, (2) the Content-Type field, (3) a HEAD request, and possibly other unspecified vectors.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Aug 20, 2007Stack-based buffer overflow in the logging function in the Unreal engine, possibly 2003 and 2004, as used in the internal web server, allows remote attackers toCVE-2007-4442 · Other software · Epic Games · reported by MITREMedium 5
Stack-based buffer overflow in the logging function in the Unreal engine, possibly 2003 and 2004, as used in the internal web server, allows remote attackers to cause a denial of service (application crash) via a request for a long .gif filename in the images/ directory, related to conversion from Unicode to ASCII.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 31, 2004Directory traversal vulnerability in manifest.ini in Unreal engine allows remote attackers to overwrite arbitrary files via ..CVE-2004-1958 · Other software · Epic Games · reported by MITREMedium 5
Directory traversal vulnerability in manifest.ini in Unreal engine allows remote attackers to overwrite arbitrary files via .. (dot dot) sequences in a UMOD (Unreal MOD) file.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgmarc.info
Dec 31, 2004Format string vulnerability in games using the Epic Games Unreal Engine 436 allows remote attackers to cause a denial of service (crash) and possibly execute arCVE-2004-1805 · Other software · Epic Games · reported by MITREMedium 5
Format string vulnerability in games using the Epic Games Unreal Engine 436 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via format string specifiers in class names.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgmarc.info
Dec 6, 2004The Unreal Engine, as used in DeusEx 1.112fm and earlier, Devastation 390 and earlier, Mobile Forces 20000 and earlier, Nerf Arena Blast 1.2 and earlier, PostalCVE-2004-0608 · Other software · Arush · reported by MITREHigh 10
The Unreal Engine, as used in DeusEx 1.112fm and earlier, Devastation 390 and earlier, Mobile Forces 20000 and earlier, Nerf Arena Blast 1.2 and earlier, Postal 2 1337 and earlier, Rune 107 and earlier, Tactical Ops 3.4.0 and earlier, Unreal 1 226f and earlier, Unreal II XMP 7710 and earlier, Unreal Tournament 451b and earlier, Unreal Tournament 2003 2225 and earlier, Unreal Tournament 2004 before 3236, Wheel of Time 333b and earlier, and X-com Enforcer, allows remote attackers to execute arbitrary code via a UDP packet containing a secure query with a long value, which overwrites memory.
- Product
- Devastation
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaluigi.altervista.orgmarc.info
Dec 31, 2003Buffer overflow in Epic Games Unreal Engine 226f through 436 allows remote attackers to cause a denial of service (crash) via a long host string in the Unreal UCVE-2003-1431 · Other software · Epic Games · reported by MITREHigh 7.1
Buffer overflow in Epic Games Unreal Engine 226f through 436 allows remote attackers to cause a denial of service (crash) via a long host string in the Unreal URL.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comarchives.neohapsis.com
Dec 31, 2003Epic Games Unreal Engine 226f through 436 does not validate the challenge key, which allows remote attackers to exhaust the player limit by joining the game mulCVE-2003-1433 · Other software · Epic Games · reported by MITREMedium 4.3
Epic Games Unreal Engine 226f through 436 does not validate the challenge key, which allows remote attackers to exhaust the player limit by joining the game multiple times.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comarchives.neohapsis.com
Dec 31, 2003Epic Games Unreal Engine 226f through 436 allows remote attackers to cause a denial of service (CPU consumption or crash) and possibly execute arbitrary code viCVE-2003-1432 · Other software · Epic Games · reported by MITREHigh 10
Epic Games Unreal Engine 226f through 436 allows remote attackers to cause a denial of service (CPU consumption or crash) and possibly execute arbitrary code via (1) a packet with a negative size value, which is treated as a large positive number during memory allocation, or (2) a negative size value in a package file.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comarchives.neohapsis.com
Dec 31, 2003Directory traversal vulnerability in Unreal Tournament Server 436 and earlier allows remote attackers to access known files via a ".." (dot dot) in an unreal://CVE-2003-1430 · Other software · Epic Games · reported by MITREMedium 5
Directory traversal vulnerability in Unreal Tournament Server 436 and earlier allows remote attackers to access known files via a ".." (dot dot) in an unreal:// URL.
- Product
- Unreal Engine
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comarchives.neohapsis.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.
Weekly security brief
The flaws that hit local websites, every Friday.
One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.
Tell us what you're building.
A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.
Not ready to talk yet? Run the free website check and see what Google sees.