CVE-2025-32433 on CISA KEV

Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling,

01What CISA says about this vulnerability

Erlang/OTP is a set of libraries for the Erlang programming language. Prior to versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20, a SSH server may allow an attacker to perform unauthenticated remote code execution (RCE). By exploiting a flaw in SSH protocol message handling, a malicious actor could gain unauthorized access to affected systems and execute arbitrary commands without valid…

02Required action — verbatim from CISA

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

03Notes & references

• github.com — https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2
• github.com — https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12
• github.com — https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f
• github.com — https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
erlang	otp	>= OTP-27.0-rc1, < OTP-27.3.3, >= OTP-26.0-rc1, < OTP-26.2.5.11, < OTP-25.3.2.20

06Detection

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