Vulnerability · Published Nov 4, 2025 · Assigned by AHA
CVE-2025-35021Abilis CPX Fallback Shell Connection Relay
Medium 6.5
In plain English
A medium-severity security flaw in CPX from Abilis. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 73.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
By failing to authenticate three times to an unconfigured Abilis CPX device via SSH, an attacker can login to a restricted shell on the fourth attempt, and from there, relay connections.
Affected products (as reported)
Weakness: CWE-1188 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
References
- https://www.runzero.com/advisories/abilis-cpx-authentication-bypass-cve-2025-35021/ technical-description, third-party-advisory
- https://takeonme.org/gcves/GCVE-1337-2025-00000000000000000000000000000000000000000000000001011111111111011111111110000000000000000000000000000000000000000000000000000000100 technical-description, third-party-advisory
- https://support.abilis.net/relnotes/cpx2k/R9.0.html#R9.0.7 vendor-advisory