RCE in Abilis Cpx
CVE-2025-35021
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.runzero.com/advisories/abilis-cpx-authentication-bypass-cve-2025-35021/ (Exploit, technical-description, Third Party Advisory, Mitigation, third-party-advisory)
- takeonme.org/gcves/GCVE-1337-2025-000000000000000000000000000000000000000000000… (Exploit, technical-description, Third Party Advisory, Mitigation, third-party-advisory)
- support.abilis.net/relnotes/cpx2k/R9.0.html (vendor-advisory, Release Notes)
Frequently asked questions
- What is CVE-2025-35021?
- CVE-2025-35021 is a medium-severity vulnerability in Abilis Cpx, classified under Initialization of a Resource with an Insecure Default. CVSS score: 6.5/10. Published 2025-11-04.
- How severe is CVE-2025-35021?
- Medium severity. CVSS v3 base score is 6.5 out of 10.