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Threats / Fortra / CVE-2025-10035
CVE-2025-10035 · EUVD no mirror located · GCVE no mirror located Verified 2026-06-07

Fortra GoAnywhere MFT vulnerability

Fortra GoAnywhere MFT contains a deserialization vulnerability allowing attackers with forged license signatures to inject arbitrary commands through untrusted object deserialization.

Verdict

Today item, not a backlog item.

An attacker who can forge a valid license response signature can deserialize malicious objects in GoAnywhere MFT, achieving command injection. This vulnerability is actively exploited in ransomware campaigns.

CISA KEV Yes · 2025-09-293Ransomware use Flagged3EPSS 0.62239 (verify live)4
01

Is it exploitable?

— the evidence, ranked above the score
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-09-29), flagged for known ransomware use.
CISA KEV ↗Confirmed
Probability (EPSS)
EPSS 0.62239 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
FIRST EPSS ↗High
Severity / affected
Affected: Fortra, GoAnywhere MFT. Confirm exact fixed builds in the vendor advisory.
NVD ↗Reported
Weakness (CWE)
Mapped to CWE-502 Deserialization of Untrusted Data, CWE-77 Command Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
NVD ↗Reported
WeaknessCWE-502 · Deserialization of Untrusted DataCWE-77 · Command InjectionInjection
02

Who’s exploiting it?

— attribution turns risk into urgency
Attribution not established

No threat-actor attribution is established from the public feed for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.

03

Why it matters

— the attack path, told twice: adversary, then board
1

Front door — unauthenticated access narrative 1

Attacker
I craft a fraudulent license response with a valid signature by exploiting the deserialization flaw.
Business
The organization's file transfer system becomes a vector for unauthorized code execution.
2

Keys to the kingdom — privilege/identity takeover narrative 2

Attacker
I inject arbitrary commands through the deserialized object payload during license validation.
Business
Attackers gain command execution privileges on the MFT server hosting sensitive file transfers.
3

Lateral reach — past segmentation narrative 3

Attacker
I establish persistence and lateral movement within the network using the compromised MFT instance.
Business
Ransomware operators encrypt critical business data and demand payment, disrupting operations.
04

What to do

— defensible action
  • Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05

Coverage & confidence

— what we know, and what we don’t

Established (cited)

  • KEV listing (CISA)
  • Ransomware-use flag (CISA)
  • EPSS probability (FIRST)
  • CWE weakness mapping (NVD)
  • Catalogued by Fortra (CNA)

    • Coverage gaps — stated, not hidden

  • No EUVD / GCVE mirror in feed — single-authority dependency for the identifier.
  • EPSS & exposure are time-varying; verify live at the source.
  • Threat-actor attribution not established from feed data — absence of a name is not absence of compromise.
  • No finder/reporter credit recorded in the public CVE entry — the work behind this find is unattributed.
    • Disclosure & credit2
    Catalogued by FortraCNA
    Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.