Fortra GoAnywhere MFT Deserialization of Untrusted Data Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

CRITICAL

10 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitation Likelihood

EPSS Prediction

66.02 %

Predictive Probability

Percentile Rank

98.5 th

Documented as more likely to be exploited than 98.5% of known CVEs.

Detection Date

Sep 29, 2025

Remediation Due

Oct 20, 2025

CISA Catalog Active

Threat Analysis

Fortra GoAnywhere MFT contains a deserialization of untrusted data vulnerability allows an actor with a validly forged license response signature to deserialize an arbitrary actor-controlled object, possibly leading to command injection.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Asset Context

Vendor Identity

Fortra

Affected Product

GoAnywhere MFT

Ransomware Status

Campaign Use Known

Weakness Classification

CWE-502 CWE-77

External Intelligence

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

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2025-10035