CVE-2025-35021

Abilis CPX Fallback Shell Connection Relay

CVSS 6.5 MEDIUMEPSS 0.3%CWE-1188

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

04 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Affected products

Abilis · CPX

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References

https://support.abilis.net/relnotes/cpx2k/R9.0.html#R9.0.7 https://takeonme.org/gcves/GCVE-1337-2025-00000000000000000000000000000000000000000000000001011111111111011111111110000000000000000000000000000000000000000000000000000000100 https://www.runzero.com/advisories/abilis-cpx-authentication-bypass-cve-2025-35021/