Critical 10.0Known exploited (CISA KEV)Published Apr 16, 2025

CVE-2025-32433Erlang/OTP SSH Vulnerable to Pre-Authentication RCE

Updated under an hour ago (Oct 26, 2026, 6:30 PM ET)

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It affects erlang otp and 23 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Jun 9, 2025; federal agencies had to remediate by Jun 30, 2025. Treat that date as your deadline.

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Every CVE for erlang otp

Exploited in the last 30 days

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.

CVSS: 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-306
Known exploited: Added to CISA KEV Jun 9, 2025; federal remediation due Jun 30, 2025Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS (exploitation in the next 30 days): 98.92% (percentile 100)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Feb 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

erlang otp erlang:otp (from the name)	from OTP-27.0-rc1, < OTP-27.3.3; from OTP-26.0-rc1, < OTP-26.2.5.11; before OTP-25.3.2.20	CNA record
erlang erlang/otp erlang:erlang/otp	before 25.3.2.20; from 26.0 before 26.2.5.11; from 27.0 before 27.3.3	NVD
cisco confd_basic cisco:confd_basic	before 7.7.19.1; from 8.0.18 before 8.1.16.2; from 8.2 before 8.2.11.1; from 8.3 before 8.3.8.1; from 8.4 before 8.4.4.1	NVD
cisco network_services_orchestrator cisco:network_services_orchestrator	before 5.7.19.1; from 5.8 before 6.1.16.2; from 6.2 before 6.2.11.1; from 6.3 before 6.3.8.1; from 6.4 before 6.4.1.1; from 6.4.2 before 6.4.4.1	NVD
cisco cloud_native_broadband_network_gateway cisco:cloud_native_broadband_network_gateway	before 2025.03.1	NVD
cisco inode_manager cisco:inode_manager	all versions	NVD
cisco smart_phy cisco:smart_phy	before 25.2	NVD
cisco ultra_packet_core cisco:ultra_packet_core	before 2025.03	NVD
cisco ultra_services_platform cisco:ultra_services_platform	all versions	NVD
cisco staros cisco:staros	before 2025.03	NVD
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References

References

https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2	x-refsource-confirm, vendor-advisory
https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12	x-refsource-misc, patch
https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f	x-refsource-misc, patch
https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891	x-refsource-misc, patch
http://www.openwall.com/lists/oss-security/2025/04/16/2	mailing-list
http://www.openwall.com/lists/oss-security/2025/04/18/1	mailing-list
http://www.openwall.com/lists/oss-security/2025/04/18/2	mailing-list
http://www.openwall.com/lists/oss-security/2025/04/18/6	mailing-list
http://www.openwall.com/lists/oss-security/2025/04/19/1	mailing-list
https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html	third-party-advisory
1–10 of 14

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.