CVE-2025-31650
Apache Tomcat: DoS via malformed HTTP/2 PRIORITY_UPDATE frame
MEDIUM 6.6EPSS 61.3%
Improper Input Validation vulnerability in Apache Tomcat. Incorrect error handling for some invalid HTTP priority headers resulted in incomplete clean-up of the failed request which created a memory leak. A large number of such requests could trigger an OutOfMemoryException resulting in a denial of service.This issue affects Apache Tomcat: from 9.0.76 through 9.0.102, from 10.1.10 through 10.1.39, from 11.0.0-M2 through 11.0.5.The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.90 though 8.5.100.Users are recommended to upgrade to version 9.0.104, 10.1.40 or 11.0.6 which fix the issue.
- Affected
- Apache Software Foundation · Apache Tomcat
- CVSS v4.0 GitHub
- 6.6 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U - CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 61.32% chance of exploitation in the next 30 days, 99th percentile
- Published
- 2025-04-28
- Updated
- 2025-11-03
Proof-of-concept exploits (6)
- B1gN0Se/Tomcat-CVE-2025-316500★ · 2025-07-07
- absholi7ly/TomcatKiller-CVE-2025-3165021★ · 2025-04-30
- assad12341/Dos-exploit-0★ · 2025-06-13
- obscura-cert/CVE-2025-316500★ · 2025-06-28
- sattarbug/Analysis-of-TomcatKiller---CVE-2025-31650-Exploit-Tool0★ · 2025-05-02
- tunahantekeoglu/CVE-2025-316502★ · 2025-04-30
ExploitDB entries (1)
Security advisories
- https://lists.apache.org/thread/j6zzk0y3yym9pzfzkq5vcyxzz0yzh826
- http://www.openwall.com/lists/oss-security/2025/04/28/2
- advisories/GHSA-3p2h-wqq4-wf4h