# CVE-2025-10035: Fortra GoAnywhere MFT Deserialization of Untrusted Data Vulnerability

- Exploited (CISA KEV): yes, added 2025-09-29, known ransomware use
- Published: 2025-09-18
- CVSS: 10 CRITICAL (v3.1)
- EPSS: 99.8% (100th percentile)
- CWE: CWE-77, CWE-502

A deserialization vulnerability in the License Servlet of Fortra's GoAnywhere MFT allows an actor with a validly forged license response signature to deserialize an arbitrary actor-controlled object, possibly leading to command injection.

## Edge WAF coverage (claimed by vendors, not measured)

| Vendor | Status | First rule | Days after publication |
|---|---|---|---|
| Cloudflare | Blocks by default | 2025-09-24 | 6 |
| AWS | No public claim | — | — |
| Microsoft Azure | No public claim | — | — |
| Google Cloud | No public claim | — | — |
| Fastly | Before feed history | — | — |
| F5 | Rule published | 2025-12-03 | 76 |
| Akamai | No public source | — | — |
| OWASP CRS | No public claim | — | — |

### Cloudflare

- 2025-09-24 · new · rule 8fe242c7c0d64d689f4fc9a1e08b39f3 · default Block
  > Fortra GoAnywhere - Auth Bypass - CVE:CVE-2025-10035. Previous action: N/A. New action: Block. This is a New Detection
  Source: https://developers.cloudflare.com/changelog/post/2025-09-24-emergency-waf-release/

### F5

- 2025-12-03 · new · rule 200013136
  > Added: signature 200013136 "Fortra GoAnywhere MFT Authentication Bypass (2)" (Authentication/Authorization Attacks, risk High), systems: Java Servlets/JSP. References: CVE-2025-10035.
  Source: https://docs.cloud.f5.com/docs-v2/platform/changelogs/security-details-changelog

## Our test (measured)

- OWASP Core Rule Set 4.25.0, paranoia level 1, anomaly threshold 5, default CRS settings: passed (0 of 2 requests blocked), template CVE-2025-10035, 2026-11-02
- OWASP Core Rule Set 4.25.0, paranoia level 2, anomaly threshold 5, default CRS settings: passed (0 of 2 requests blocked), template CVE-2025-10035, 2026-11-02

"No public claim" means no vendor statement names this CVE; "Before feed history" means the CVE is older than the vendor feed. In both cases generic rules may still block it.

HTML: https://cve.vigilbase.com/cve/CVE-2025-10035 · JSON: https://cve.vigilbase.com/api/v1/cves/CVE-2025-10035