All vulnerabilities
CVE-2025-32433GHSA-37cp-fgq5-7wc2

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

Erlang Erlang/OTP
Open in ThreatlineRecord JSON
CVSS
10.0Critical
ExploitationExploited in the wildAdded to KEV 9 Jun 2025CISA KEV
Exploit odds (EPSS)98.8%Chance of exploitation activity in the next 30 days, higher than 99.9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in27.3.3Also 26.2.5.11, 25.3.2.20 and 3 moreGitHub
Federal deadline30 Jun 2025Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 16 Apr 2025Exploit code publicMetasploit
  2. 16 Apr 2025, 21:34 UTCPublishedCVE List
  3. 9 Jun 2025Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Exploit moduleErlang OTP Pre-Auth RCE Scanner and Exploit 16 Apr 2025Metasploit

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 5

  • otpaffected: >= OTP-27.0-rc1, < OTP-27.3.3CVE List
  • otpaffected: >= OTP-26.0-rc1, < OTP-26.2.5.11CVE List
  • otpaffected: < OTP-25.3.2.20CVE List
  • OTP>= 17.0GitHub
  • ssh, otp>= 3.0.1GitHub

References 10