6.5

CVE-2025-55668: apache software foundation apache tomcat Session Fixation

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2025-55668DEBIAN-CVE-2025-55668GHSA-23hv-mwm6-g8jf
Published 13-08-2025Last modified 04-11-2025
Open JSON

Vulnerability summary

CVE-2025-55668 is a medium (CVSS 6.5) Session Fixation vulnerability in apache software foundation apache tomcat. EPSS estimates a 0.86% chance of exploitation in the next 30 days, higher than 57.7% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.86%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 14
DSA-6120-1DSA-6121-1RHSA-2026:18536RHSA-2026:18537RHSA-2026:18916RHSA-2026:2740

Timeline

  1. 13-08-2025
    PublishedVulnerability first disclosed.
  2. 04-11-2025
    Last modifiedVulnerability information updated.

Description

Session Fixation vulnerability in Apache Tomcat via rewrite valve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.7, from 10.1.0-M1 through 10.1.41, from 9.0.0.M1 through 9.0.105. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.8, 10.1.42 or 9.0.106, which fix the issue.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.86%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

+0.03 pp

From 0.83% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.86%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu4 products
  • tomcat10All versions (No fix recorded)
  • tomcat11All versions (No fix recorded)
  • tomcat8All versions (No fix recorded)
  • tomcat9All versions (No fix recorded)
Debian3 products
  • tomcat10< 10.1.52-1~deb12u1 | < 10.1.52-1~deb13u1 | < 10.1.46-1
  • tomcat11< 11.0.15-1~deb13u1 | < 11.0.11-1
  • tomcat9< 9.0.70-2
Apache1 product
  • tomcat≥ 9.0.1, < 9.0.106 | ≥ 10.0.0, < 10.1.42 | ≥ 11.0.0, < 11.0.8 | 9.0.0:milestone1 | 9.0.0:milestone10 | 9.0.0:milestone11 | 9.0.0:milestone12 | 9.0.0:milestone13 | 9.0.0:milestone14 | 9.0.0:milestone15 | 9.0.0:milestone16 | 9.0.0:milestone17 | 9.0.0:milestone18 | 9.0.0:milestone19 | 9.0.0:milestone2 | 9.0.0:milestone20 | 9.0.0:milestone21 | 9.0.0:milestone22 | 9.0.0:milestone23 | 9.0.0:milestone24 | 9.0.0:milestone25 | 9.0.0:milestone26 | 9.0.0:milestone27 | 9.0.0:milestone3 | 9.0.0:milestone4 | 9.0.0:milestone5 | 9.0.0:milestone6 | 9.0.0:milestone7 | 9.0.0:milestone8 | 9.0.0:milestone9
Apache software foundation1 product
  • apache tomcat≥ 11.0.0-M1, ≤ 11.0.7 | ≥ 10.1.0-M1, ≤ 10.1.41 | ≥ 9.0.0.M1, ≤ 9.0.105
Org.apache.tomcat1 product
  • tomcat-catalina≥ 11.0.0-M1, < 11.0.8 | ≥ 10.1.0-M1, < 10.1.42 | ≥ 9.0.0.M1, < 9.0.106
Org.apache.tomcat.embed1 product
  • tomcat-embed-core≥ 11.0.0-M1, < 11.0.8 | ≥ 10.1.0-M1, < 10.1.42 | ≥ 9.0.0.M1, < 9.0.106

6 vendors · 11 products

References

13 links
Show all 13 references