CVE-2025-32433 KEV
10.0
CRITICAL · CVSS 3.1 · EPSS 98.8% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, 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.
Scoring
| CVSS | 10.0 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 98.79% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-306 |
| On CISA KEV | yes — remediate by 2025-06-30 |
| Public exploit | none known |
| Published | 2025-04-16 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Erlang Erlang/OTP SSH Server Missing Authentication for Critical Function Vulnerability |
|---|---|
| Added | 2025-06-09 |
| Due | 2025-06-30 |
| Vendor / product | Erlang / Erlang/OTP |
| Ransomware use | none reported |
Affected (36)
| Vendor | Product |
|---|---|
| cisco | cloud native broadband network gateway |
| cisco | confd basic |
| cisco | enterprise nfv infrastructure software |
| cisco | inode manager |
| cisco | ncs 1001 |
| cisco | ncs 1002 |
| cisco | ncs 1004 |
| cisco | ncs 2000 shelf virtualization orchestrator firmware |
| cisco | ncs 2000 shelf virtualization orchestrator module |
| cisco | network services orchestrator |
| cisco | optical site manager |
| cisco | rv160 |
| cisco | rv160 firmware |
| cisco | rv160w |
| cisco | rv160w firmware |
| cisco | rv260 |
| cisco | rv260 firmware |
| cisco | rv260p |
| cisco | rv260p firmware |
| cisco | rv260w |
| cisco | rv260w firmware |
| cisco | rv340 |
| cisco | rv340 firmware |
| cisco | rv340w |
| cisco | rv340w firmware |
| cisco | rv345 |
| cisco | rv345 firmware |
| cisco | rv345p |
| cisco | rv345p firmware |
| cisco | smart phy |
| cisco | staros |
| cisco | ultra cloud core |
| cisco | ultra packet core |
| cisco | ultra services platform |
| debian | debian linux |
| erlang | erlang\/otp |
References
- https://github.com/erlang/otp/commit/0fcd9c56524b28615e8ece65fc0c3f66ef6e4c12
- https://github.com/erlang/otp/commit/6eef04130afc8b0ccb63c9a0d8650209cf54892f
- https://github.com/erlang/otp/commit/b1924d37fd83c070055beb115d5d6a6a9490b891
- https://github.com/erlang/otp/security/advisories/GHSA-37cp-fgq5-7wc2
- http://www.openwall.com/lists/oss-security/2025/04/16/2
- http://www.openwall.com/lists/oss-security/2025/04/18/1
- http://www.openwall.com/lists/oss-security/2025/04/18/2
- http://www.openwall.com/lists/oss-security/2025/04/18/6
- http://www.openwall.com/lists/oss-security/2025/04/19/1
- https://lists.debian.org/debian-lts-announce/2025/04/msg00028.html
- https://security.netapp.com/advisory/ntap-20250425-0001/
- https://github.com/ProDefense/CVE-2025-32433/blob/main/CVE-2025-32433.py
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32433
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