Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N C H H H 10.0 .9879 99.9 YES
AFFECTED
Product Versions Fixed
otp >= OTP-27.0-rc1, < OTP-27.3.3 – —
TIMELINE
Apr 8 Reserved by GitHub_M
Apr 16 Published (CNA: GitHub_M)
Jun 9 Added to CISA KEV, remediation due 2025-06-30
Description
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 credentials. This issue is patched in versions OTP-27.3.3, OTP-26.2.5.11, and OTP-25.3.2.20. A temporary workaround involves disabling the SSH server or to prevent access via firewall rules.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| April 8, 2025 | Reserved | Reserved by GitHub_M |
| April 16, 2025 | Published | Published (CNA: GitHub_M) |
| June 9, 2025 | KEV ADDED | Added to CISA KEV, remediation due 2025-06-30 |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| erlang | otp | — | >= OTP-27.0-rc1, < OTP-27.3.3 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-32433 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.