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Exploited vulnerability · CISA KEV

Is CVE-2025-32433 exploited? Yes: in CISA KEV since 9 Jun 2025

Gociux · Erlang/OTP · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2025-32433, Erlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 9 Jun 2025, 54 days after it was published. It affects Erlang/OTP. 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 · 9 Jun 2025
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity10CVSS 3.1 · critical
US federal due30 Jun 2025BOD 22-01 deadline

What it is

Erlang Erlang/OTP SSH server contains a missing authentication for critical function vulnerability. This could allow an attacker to execute arbitrary commands without valid credentials, potentially leading to unauthenticated remote code execution (RCE). By exploiting a flaw in how SSH protocol messages are handled, a malicious actor could gain unauthorized access to affected systems. This vulnerability could affect various products that implement Erlang/OTP SSH server, including—but not limited to—Cisco, NetApp, and SUSE.

VendorErlang (1 exploited CVE in KEV)
ProductErlang/OTP
VulnerabilityErlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability
WeaknessCWE-306
Published16 Apr 2025
Added to KEV9 Jun 2025
Reported by (CNA)GitHub_M

What to do

  1. Check whether you run it. Look for Erlang/OTP in your asset inventory, including appliances and cloud images. Stack check lists every exploited Erlang 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 16 Apr 2025.
  4. Get told next time. Email alerts when CISA adds a CVE for Erlang.

References

Questions

Is CVE-2025-32433 being exploited?

Yes. CISA added CVE-2025-32433 to the Known Exploited Vulnerabilities catalog on 9 Jun 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2025-32433 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2025-32433?

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 Erlang's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Erlang/OTP 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 June 2025 · act-now radar.

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