What’s Vulnerable › Vulnerabilities

CVE-2025-35021: Abilis CPX Fallback Shell Connection Relay

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-04 · updated 2026-10-18
• Weakness: CWE-1188

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

• Abilis CPX: before 9.0.7 — fixed in 9.0.7

How to fix

Upgrade to a fixed version: Abilis CPX 9.0.7. Check the vendor advisory for mitigations.

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/

Get alerted when CVE-2025-35021 or the next vulnerability affects your stack