CVE-2025-35021 | HackTesting

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.

Credits

HD Moore

Tod Beardsley

AHA!

References

https://www.runzero.com/advisories/abilis-cpx-authentication-bypass-cve-2025-35021/

https://takeonme.org/gcves/GCVE-1337-2025-00000000000000000000000000000000000000000000000001011111111111011111111110000000000000000000000000000000000000000000000000000000100

https://support.abilis.net/relnotes/cpx2k/R9.0.html#R9.0.7