CVE-2025-9501W3 Total Cache OS Command Injection
W3 Total Cache <= 2.8.12 - Unauthenticated Command Injection
Published Nov 18, 2025 · Updated Oct 19, 2026 · Also known as 7cd8f7da-86d4-4e58-8ce8-f1d147fdcdcc, TR-25-0399, WORDFENCE-7cd8f7da-86d4-4e58-8ce8-f1d147fdcdcc
Key Facts
Patch immediately- CVE-2025-9501 is a critical-severity vulnerability (CVSS 9.0 v3.1) affecting W3 Total Cache (wordpress-plugin).
- It is exploited in the wild, listed in Industry KEV feed since May 7, 2026. No public exploit code is known.
- EPSS estimates a 22% probability of exploitation in the next 30 days.
- Fixed versions are available, including W3 Total Cache 2.8.13.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
22%
Higher than 97.6% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
55/100
Publication score, see How it works
Exploitation Verdict
KEV listed
May 7, 2026
170 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
1
Reports of active use
Advisories And Exploit References
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-9501
- advisoryhttps://wpscan.com/vulnerability/6697a2c9-63ae-42f0-8931-f2e5d67d45ae/
- advisoryUSOM advisory
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/7cd8f7da-86d4-4e58-8ce8-f1d147fdcdcc?source=api-prod
- advisoryhttps://www.wordfence.com/threat-intel/vulnerabilities/id/7cd8f7da-86d4-4e58-8ce8-f1d147fdcdcc?source=api-scan
Description
The W3 Total Cache WordPress plugin before 2.8.13 is vulnerable to command injection via the _parse_dynamic_mfunc function, allowing unauthenticated users to execute PHP commands by submitting a comment with a malicious payload to a post.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | May 7, 2026 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| W3 Total Cachewordpress-plugin | See advisory | 2.8.13 |
Patched Releases
W3 Total Cache
2.8.13
Timeline
Publicly disclosed
Nov 18, 2025
Added to Industry KEV feed
May 7, 2026
Last updated
Oct 19, 2026
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- advisorynvd.nist.gov · CVE-2025-9501
- advisorywpscan.com · 6697a2c9-63ae-42f0-8931-f2e5d67d45ae
- advisoryUSOM advisory
- advisorywordfence.com · 7cd8f7da-86d4-4e58-8ce8-f1d147fdcdcc
- advisorywordfence.com · 7cd8f7da-86d4-4e58-8ce8-f1d147fdcdcc
FAQ
Common Questions.
The W3 Total Cache WordPress plugin before 2.8.13 is vulnerable to command injection via the _parse_dynamic_mfunc function, allowing unauthenticated users to execute PHP commands by submitting a comment with a malicious payload to a post.
Affected: W3 Total Cache (wordpress-plugin). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 7, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including W3 Total Cache 2.8.13.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2025-9501 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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