Vulnerability in Arista Eos
CVE-2021-28507
An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Arista Eos — versions 4.21.0f, 4.21.1f, 4.21.3f
- Arista Networks Eos — versions 4.22.x, 4.26.2F, 4.25.5.1M
Weakness classification (CWE)
References
- www.arista.com/en/support/advisories-notices/security-advisories/13449-security… (Exploit, Patch, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-28507?
- CVE-2021-28507 is a medium-severity vulnerability in Arista Eos, classified under Improper Access Control. CVSS score: 5.5/10. Published 2022-01-14.
- How severe is CVE-2021-28507?
- Medium severity. CVSS v3 base score is 5.5 out of 10.