HOMEVULNERABILITIESCVE-2025-47947
HIGH

CVE-2025-47947

CWE-1050Published: May 21, 2025· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case (in stable released versions): when the payload's content type is `application/json`, and there is at least one rule which does a `sanitiseMatchedBytes` action. A patch is available at pull request 3389 and expected to be part of version 2.9.9. No known workarounds are available.

NVD Source

Technical Analysis

CVE-2025-47947 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

trustwave1 product(s)
modsecurity
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/owasp-modsecurity/ModSecurity/pull/3389
ADVISORYhttps://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r
ADVISORYhttps://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8r

All References (3)

→
https://github.com/owasp-modsecurity/ModSecurity/pull/3389Issue Tracking · Patch
→
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8rExploit · Vendor Advisory
→
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-859r-vvv8-rm8rExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2025-47947
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-1050
CISA KEVNo
Affected1 vendor(s)
PublishedMay 21, 2025

Related CVEs (CWE-1050)

CVE-2021-41039
7.5
CVE-2023-1390
7.5
CVE-2025-67419
7.5
CVE-2026-4634
7.5
CVE-2024-4068
7.5
CVE-2025-48866
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2025-47947 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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