What is CVE-2025-9501?
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.
Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 346 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 9 — CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS (FIRST)
- 22.6% probability of exploitation in the next 30 days, higher than 97.6% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 10/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2025-11-17
Is CVE-2025-9501 being exploited?
Weaponised exploit code for CVE-2025-9501 is publicly available. 2 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 37 in the Threadlinqs vulnerability feed.
- InnerFireZ/CVE-2025_9501-POC (github)
- trickest/cve (trickest)
Affected products and versions
- (vendor unspecified): W3 Total Cache
How to fix CVE-2025-9501
The record marks a vendor fix as available for CVE-2025-9501. Vendor advisory: https://wpscan.com/vulnerability/6697a2c9-63ae-42f0-8931-f2e5d67d45ae/. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2025-9501
3 tracked threats in the Threadlinqs corpus reference CVE-2025-9501, either in the campaign’s CVE list or as an indicator on the campaign record.
- PCPJack Worm — Cloud Credential Theft Framework Evicting TeamPCP Infections (CVE-2025-29927, CVE-2025-55182, CVE-2026-1357, CVE-2025-9501, CVE-2025-48703) — CRITICAL · 2026-05-07
- Bissa Scanner — AI-Assisted Mass Exploitation of CVE-2025-55182 (React Server Components RCE) and CVE-2025-9501 (W3 Total Cache) — CRITICAL · 2026-04-27
- Bissa Scanner — AI-Assisted Mass Exploitation and Credential Harvesting Campaign (@BonJoviGoesHard / Dr. Tube) — HIGH · 2026-04-22
Sources
Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .