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

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.

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
Fortra	GoAnywhere MFT	0

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2025-09-29. Ransomware use: Known.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2025-09-18T22:01:51.337Z
• Last modified: 2026-02-26T17:48:26.229Z
• Added to CISA KEV: 2025-09-29
• BOD 22-01 due: 2025-10-20

09References

• www.fortra.com — https://www.fortra.com/security/advisories/product-security/fi-2025-012