CVE-2025-49125 | Apache Tomcat: Security constraint bypass for pre/post-resources

Authentication Bypass Using an Alternate Path or Channel vulnerability in Apache Tomcat.  When using PreResources or PostResources mounted other than at the root of the web application, it was possible to access those resources via an unexpected path. That path was likely not to be protected by the same security constraints as the expected path, allowing those security constraints to be bypassed. 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. 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 11.0.8, 10.1.42 or 9.0.106, which fix the issue.

Published: 2025-06-16 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2025-49125 is rated Moderate Risk (63.2/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.16%). Core evidence: EPSS rose +2.97% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-49125

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.19% 3.16% +2.97%
2 2026-05-22 0.35% 0.19% -0.16%
3 2026-04-12 0.35%

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-49125

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-49125

GitHub Security Advisory for CVE-2025-49125

GHSA-wc4r-xq3c-5cf3 · Severity: medium · Ecosystem: maven — Apache Tomcat - Security constraint bypass for pre/post-resources

OS Trackers for CVE-2025-49125

vendor priority summary link
debian not yet assigned CVE-2025-49125 not yet assigned priority: Debian including 3 source packages (tomcat10, tomcat11, tomcat9), 12 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 12. https://security-tracker.debian.org/tracker/CVE-2025-49125
redhat low https://access.redhat.com/security/cve/CVE-2025-49125
suse high https://www.suse.com/security/cve/CVE-2025-49125/
ubuntu medium CVE-2025-49125 medium priority: Ubuntu including 6 source packages (tomcat10, tomcat11, tomcat6, tomcat7, tomcat8, tomcat9), 44 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 19, ignored 12, needed 6, not-affected 4, released 3. https://ubuntu.com/security/CVE-2025-49125

Affected software / configurations for CVE-2025-49125

Vendor Product Version Raw CPE
apache tomcat >= 9.0.0, < 9.0.106 cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat >= 10.1.0, < 10.1.42 cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
apache tomcat >= 11.0.0, < 11.0.8 cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*

References for CVE-2025-49125

cvelogic Threat Intelligence