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Advisory details: gitlab / maven/org.apache.tomcat/tomcat-catalina/CVE-2025-52520
Advisory ID gitlab/maven/org.apache.tomcat/tomcat-catalina/CVE-2025-52520
Aliases CVE-2025-52520
GHSA-wr62-c79q-cv37
Summary Apache Tomcat Catalina is vulnerable to DoS attack through bypassing of size limits For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (3)
CWE-190 Integer Overflow or Wraparound
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.tomcat/tomcat-catalina/CVE-2025-52520.yml
Reference id Reference type URL
https://github.com/apache/tomcat
https://github.com/apache/tomcat/commit/927d66fbc294cb65242102b817a45fd80834e040
https://github.com/apache/tomcat/commit/a51e4bedccfafd35b7cdd0ee3e22267dee9f90db
https://github.com/apache/tomcat/commit/fc42bbccb9041fafd194fbfdf3eab1d44cb5c45c
https://lists.apache.org/thread/trqq01bbxw6c92zx69kx2mw2qgmfy0o5
https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
CVE-2025-52520 https://nvd.nist.gov/vuln/detail/CVE-2025-52520
GHSA-wr62-c79q-cv37 https://github.com/advisories/GHSA-wr62-c79q-cv37
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.apache.tomcat/tomcat-catalina/CVE-2025-52520.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-07-11T14:08:03Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/52xxx/CVE-2025-52520.json

Source Advisory: vulnrichment/CVE-2025-52520

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]