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CVE-2025-52520

Apache Tomcat: DoS via integer overflow in multipart file upload

Published: Jul 10, 2025Updated: Nov 4, 2025 Sources: CVE List NVD GHSA BDUCWE-190
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.0%
Top 22.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-190

Affected Products

Apache TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
tomcatapache
On-premWeb App
Networking Infrastructure / load-balancer-proxy
org.apache.tomcat:tomcat-catalinaMavenOSS Libraries
org.apache.tomcat.embed:tomcat-embed-coreMavenOSS Libraries
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
mavenpackage-ecosystemOSS Libraries
ооо «ред софт»commercialRUOperating Systemsaka red soft
and 5 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://lists.apache.org/thread/trqq01bbxw6c92zx69kx2mw2qgmfy0o5
lists.apache.org
http://www.openwall.com/lists/oss-security/2025/07/10/12
openwall.com
https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
lists.debian.org
and 10 more references View all →

Timeline

Published
Jul 10, 2025
Last Updated
Nov 4, 2025

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