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Exploited vulnerability · CISA KEV

Is CVE-2025-10035 exploited? Yes: in CISA KEV since 29 Sep 2025

Gociux · Fortra GoAnywhere MFT · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2025-10035, Fortra GoAnywhere MFT Deserialization of Untrusted Data Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 29 Sep 2025, 11 days after it was published. It is known to be used in ransomware campaigns. It affects Fortra GoAnywhere MFT. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 29 Sep 2025
ransomwareKnownused in campaigns
EPSStop 1%among the most likely CVEs to be exploited
severity10CVSS 3.1 · critical
US federal due20 Oct 2025BOD 22-01 deadline

What it is

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.

VendorFortra (4 exploited CVEs in KEV)
ProductGoAnywhere MFT
VulnerabilityFortra GoAnywhere MFT Deserialization of Untrusted Data Vulnerability
WeaknessCWE-502, CWE-77
Published18 Sep 2025
Added to KEV29 Sep 2025
Reported by (CNA)Fortra

What to do

  1. Check whether you run it. Look for GoAnywhere MFT in your asset inventory, including appliances and cloud images. Stack check lists every exploited Fortra CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 18 Sep 2025.
  4. Get told next time. Email alerts when CISA adds a CVE for Fortra.

Other exploited CVEs in GoAnywhere MFT

References

Questions

Is CVE-2025-10035 being exploited?

Yes. CISA added CVE-2025-10035 to the Known Exploited Vulnerabilities catalog on 29 Sep 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2025-10035 used in ransomware attacks?

Yes, CISA lists it as known to be used in ransomware campaigns.

How do I fix CVE-2025-10035?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Fortra's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected GoAnywhere MFT and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in September 2025 · Fortra scorecard · act-now radar.

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