Known exploited vulnerability · CISA KEV

CVE-2025-32433: Erlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability

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.

CVE-2025-32433

Exploited in the wild. Fix this first.

CISA added it to the Known Exploited Vulnerabilities catalog on 2025-06-09: attackers are using it right now.

CISA KEV: Listed; Added 2025-06-09 · federal fix-by 2025-06-30
EPSS (30 days): 99%; Higher than 99.9% of CVEs · 2026-11-01
CVSS: No score

What CISA says

Erlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability

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

Got a whole scan? Scan Hub runs this check on every finding in your Nessus, Qualys, Rapid7 or OpenVAS export and ranks the report by it.

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How to check if you are exposed to CVE-2025-32433

Find every Erlang/OTP system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2025-32433.

US federal agencies had to fix this by 2025-06-30. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.

Timeline

2025-06-09 · Added to CISA's Known Exploited Vulnerabilities catalog
2025-06-30 · Fix-by date for US federal agencies, passed 489 days ago

Vendor advisories and fixes

Weakness type

CWE-306

Keep going

Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.