CISA KEV Critical Insecure deserialization exploit reference

CVE-2025-24813 — Apache Tomcat Path Equivalence Vulnerability

Path Equivalence: 'file.Name' (Internal Dot) leading to Remote Code Execution and/or Information disclosure and/or malicious content added to uploaded files via write enabled Default Servlet in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.2, from 10.1.0-M1 through 10.1.34, from 9.0.0.M1 through 9.0.98. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected. If all of the following were true, a malicious user was able to view security sensitive files and/or inject content into those files: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - a target URL for security sensitive uploads that was a sub-directory of a target URL for public uploads - attacker knowledge of the names of security sensitive files being uploaded - the security sensitive files also being uploaded via partial PUT If all of the following were true, a malicious user was able to perform remote code execution: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - application was using Tomcat's file based session persistence with the default storage location - application included a library that may be leveraged in a deserialization attack Users are recommended to upgrade to version 11.0.3, 10.1.35 or 9.0.99, which fixes the issue.

Published Mar 10, 2025 · Updated Oct 13, 2026 · Sources: CISA Known Exploited Vulnerabilities, NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: apache

Urgent

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

CISA KEV · Apr 1, 2025 Detection templates (Nuclei) · 1 Metasploit modules · 1 Exploit-DB · 1 Proofs of concept on GitHub · 59

How the score was calculated

Confirmed exploitation (CISA KEV)+35
Public exploit/PoC (nuclei, metasploit, exploitdb, github)+20
EPSS 99.9% (30-day exploitation probability)+15
Technical severity (critical)+10

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Confirmed

CISA KEV, listed Apr 1, 2025

EPSS FIRST

99.93%

ahead of 100% of scored CVEs · Oct 14, 2026

Affects

Apache Software Foundation

Tomcat and 4 more

CVSS base

9.8

Critical · 4 source(s)

Prioritization reference: 10.0 provisional

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Active

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Maven Org.apache.tomcat:tomcat-catalina: fixed in version 11.0.3 — github.com (GitHub Security Advisories)
Maven Org.apache.tomcat:tomcat-catalina: fixed in version 10.1.35 — github.com (GitHub Security Advisories)
Maven Org.apache.tomcat:tomcat-catalina: fixed in version 9.0.99 — github.com (GitHub Security Advisories)
Maven Org.apache.tomcat.embed:tomcat-embed-core: fixed in version 11.0.3 — github.com (GitHub Security Advisories)
Maven Org.apache.tomcat.embed:tomcat-embed-core: fixed in version 10.1.35 — github.com (GitHub Security Advisories)
Maven Org.apache.tomcat.embed:tomcat-embed-core: fixed in version 9.0.99 — github.com (GitHub Security Advisories)

CISA required action CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

US federal deadline: Apr 22, 2025 — passed 541 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Apache Software Foundation Tomcat, Debian Debian Linux, Netapp Bootstrap Os…).
Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
Apply the fixed version or the patch documented under Remediation.
EPSS ahead of 100% of scored CVEs: prioritize it in the patch queue.
Search available logs for exploit probes matching the vulnerability class (insecure deserialization), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Apache Software Foundation	Tomcat	version 11.0.0-milestone24version 11.0.0-milestone12version 11.0.0-milestone13version 11.0.0-milestone14version 11.0.0-milestone15version 11.0.0-milestone16version 11.0.0-milestone17version 11.0.0-milestone18 and 40 more version 11.0.0-milestone19version 11.0.0-milestone2version 11.0.0-milestone20version 11.0.0-milestone21version 11.0.0-milestone22version 11.0.0-milestone23< 9.0.99version 11.0.0-milestone25version 11.0.0-milestone3version 11.0.0-milestone4version 11.0.0-milestone5version 11.0.0-milestone6version 11.0.0-milestone7version 11.0.0-milestone8version 11.0.0-milestone9version 11.0.0-milestone10≥ 10.1.1 and < 10.1.35≥ 11.0.1 and < 11.0.3version 10.1.0-milestone1version 10.1.0-milestone10version 10.1.0-milestone11version 10.1.0-milestone12version 10.1.0-milestone13version 10.1.0-milestone14version 10.1.0-milestone15version 10.1.0-milestone16version 10.1.0-milestone17version 10.1.0-milestone18version 10.1.0-milestone2version 11.0.0-milestone11version 11.0.0-milestone1version 10.1.0-milestone9version 10.1.0-milestone8version 10.1.0-milestone7version 10.1.0-milestone6version 10.1.0-milestone5version 10.1.0-milestone4version 10.1.0-milestone3version 10.1.0-milestone20version 10.1.0-milestone19	Vulnerable	NIST National Vulnerability Database
Apache Software Foundation	Tomcat	≥ 11.0.0-M1 and ≤ 11.0.2≥ 10.1.0-M1 and ≤ 10.1.34≥ 9.0.0.M1 and ≤ 9.0.98≥ 8.5.0 and ≤ 8.5.100	Vulnerable	CVE Program (cve.org) e CISA ADP
Debian	Debian Linux	version 11.0	Vulnerable	NIST National Vulnerability Database
Netapp	Bootstrap Os	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Maven	Org.apache.tomcat:tomcat-catalina	≥ 11.0.0-M1 and < 11.0.3≥ 10.1.0-M1 and < 10.1.35≥ 9.0.0.M1 and < 9.0.99≥ 8.5.0 and ≤ 8.5.100	Vulnerable	GitHub Security Advisories
Maven	Org.apache.tomcat.embed:tomcat-embed-core	≥ 11.0.0-M1 and < 11.0.3≥ 10.1.0-M1 and < 10.1.35≥ 9.0.0.M1 and < 9.0.99≥ 8.5.0 and ≤ 8.5.100	Vulnerable	GitHub Security Advisories

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
10.0	CVSS 3.1	Critical	3.9	6.0	134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
10.0	CVSS 3.1	Critical	—	—	CISA-ADP via CVE Program (cve.org) e CISA ADP
9.8	CVSS 3.1	Critical	3.9	5.9	nvd@nist.gov via NIST National Vulnerability Database
9.8	CVSS 3.1	Critical	—	—	GitHub, Inc. via GitHub Security Advisories

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Scoring entities (NIST, CNA, ADP) score independently; each score is shown with its origin. For prioritization we use 10.0 (CISA ADP via NIST National Vulnerability Database) as a conservative provisional reference — not a definitive official score.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-502 · Deserialization of Untrusted Data

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

Listed

Apr 1, 2025

Federal deadline

Apr 22, 2025

passed 541 day(s) ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Detection templates (Nuclei)

Apache Tomcat Path Equivalence - Remote Code Execution

Metasploit modules

Tomcat Partial PUT Java Deserialization excellent Mar 10, 2025

Exploit-DB

Apache Tomcat 11.0.3 - Remote Code Execution Apr 7, 2025

Proofs of concept on GitHub — 59 repositories; showing the 10 most starred

his repository contains an automated Proof of Concept (PoC) script for exploiting **CVE-2025-24813**, a Remote Code Execution (RCE) vulnerability in Apache Tomcat. The vulnerability allows an attacker to upload a malicious serialized payload to the server, leading to arbitrary code execution via des ★ 195 Mar 14, 2025
Apache Tomcat 远程代码执行漏洞批量检测脚本(CVE-2025-24813) ★ 98 Mar 13, 2025
Apache (CVE-2025-24813) GOExploiter Checker & Exploiter very Fast ★ 20 Aug 31, 2025
Apache Tomcat - Remote Code Execution via Session Deserialization (CVE-2025-24813) ★ 19 May 25, 2025
CVE-2025-24813利用工具 ★ 16 Mar 16, 2025
cve-2025-24813验证脚本 ★ 11 Mar 14, 2025
CVE-2025-24813 poc ★ 9 Apr 10, 2025
A tool that identifies writable web directories in Apache Tomcat via HTTP PUT method [CVE-2025-24813] ★ 9 Jul 19, 2025
Apache Tomcat Remote Code Execution (RCE) Exploit - CVE-2025-24813 ★ 7 Mar 18, 2025
A playground to test the RCE exploit for tomcat CVE-2025-24813 ★ 7 Mar 24, 2025

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 99.93%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
Monitor serialized objects in requests and unexpected processes spawned by the runtime.
Hunt retroactively in logs from before Apr 1, 2025 (KEV listing): exploitation may have started earlier.

web/proxy/WAF logsnetwork IDS/IPSendpoint telemetry (EDR)application logs

Timeline

What happened to this CVE, newest first.

2026
Fix documented
Oct 13, 2026 · GitHub Security Advisories
Affected products added · maven/org.apache.tomcat:tomcat-catalina, maven/org.apache.tomcat.embed:tomcat-embed-core
Oct 13, 2026 · GitHub Security Advisories
Affected products added · apache software foundation/apache tomcat
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
Affected products added · apache/tomcat, debian/debian linux, netapp/bootstrap os
Oct 13, 2026 · NIST National Vulnerability Database
CVSS changed · 9.8
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Added to CISA KEV (detected)
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
Record created in this database
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
2025
Added to CISA KEV catalog
Mar 31, 2025 · CISA
CVE published
Mar 10, 2025 · apache

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 13, 2026 – Oct 13, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

16 on the record

lists.apache.org/thread/j5fkjv2k477os90nczf2v9l61fb0kkgq
Vendor Advisory, vendor-advisory, NIST National Vulnerability Database
github.com/absholi7ly/POC-CVE-2025-24813/blob/main/README.md
Exploit, NIST National Vulnerability Database
github.com/advisories/GHSA-83qj-6fr2-vhqg
GitHub Security Advisories
security.netapp.com/advisory/ntap-20250321-0001/
Third Party Advisory, NIST National Vulnerability Database
security.netapp.com/advisory/ntap-20250321-0001
GitHub Security Advisories
github.com/apache/tomcat/commit/0a668e0c27f2b7ca0cc7c6eea32253b9b5ecb29c
GitHub Security Advisories
github.com/apache/tomcat/commit/eb61aade8f8daccaecabf07d428b877975622f72
GitHub Security Advisories
nvd.nist.gov/vuln/detail/CVE-2025-24813
GitHub Security Advisories
www.cisa.gov/known-exploited-vulnerabilities-catalog
Third Party Advisory, US Government Resource, NIST National Vulnerability Database
github.com/apache/tomcat/commit/f6c01d6577cf9a1e06792be47e623d36acc3b5dc
GitHub Security Advisories
www.vicarius.io/vsociety/posts/cve-2025-24813-mitigate-apache-tomcat-rce
Issue Tracking, NIST National Vulnerability Database
www.openwall.com/lists/oss-security/2025/03/10/5
Mailing List, Third Party Advisory, NIST National Vulnerability Database
www.vicarius.io/vsociety/posts/cve-2025-24813-tomcat-mitigation-vulnerability
Issue Tracking, NIST National Vulnerability Database
www.vicarius.io/vsociety/posts/cve-2025-24813-detect-apache-tomcat-rce
Issue Tracking, NIST National Vulnerability Database
lists.debian.org/debian-lts-announce/2025/04/msg00003.html
Mailing List, Third Party Advisory, NIST National Vulnerability Database
www.vicarius.io/vsociety/posts/cve-2025-24813-tomcat-detect-vulnerability
Issue Tracking, NIST National Vulnerability Database

Elsewhere on this site

Apache Software Foundation
every CVE for this vendor

2025-04
what else CISA listed that month

Insecure deserialization
same class

CWE-502
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2026-73180 Insufficient Session Expiration vulnerability in Apache Tomcat meant that if the session… Aug 25, 2026
High CVE-2026-65927 Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite… Aug 25, 2026
Critical CVE-2026-65905 Authentication Bypass by Capture-replay in Apache Software Foundation Tomcat Aug 25, 2026
Critical CVE-2026-65637 Improper Input Validation in Apache Software Foundation Tomcat Aug 25, 2026
High CVE-2026-65183 TOCTOU Race Condition in Apache Software Foundation Tomcat Aug 25, 2026
High CVE-2026-68763 Uncontrolled Resource Consumption in Apache Software Foundation Tomcat Aug 25, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-24813 is "Apache Tomcat Path Equivalence Vulnerability", rated Critical. It affects Tomcat (Apache Software Foundation); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 9.8 describes technical severity. EPSS 99.93% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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