CVE-2026-73439
HIGHDescription
On affected platforms running Arista EOS, if OpenConfig is configured and running a gNMI server on the system, and if gNSI Pathz is configured and a gNSI Pathz policy is present on the system, then gNMI may fail to correctly enforce the rules in this policy if both a group rule and a user rule for the same path is present in the policy. Under certain conditions, this can lead to an authenticated user gaining unauthorized permission to read or write gNMI paths that the Pathz policy is intended to restrict.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 26% of all known CVEs.
References
Related Vulnerabilities
Other CWE-842 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-31007 | Medium | 4.9 | 27% | - | Fix |
| CVE-2023-25575 | High | 7.7 | 0.6% | - | Fix |
| CVE-2024-10082 | High | 8.7 | 0.5% | - | Fix |
| CVE-2022-45097 | Medium | 6.3 | 0.4% | - | Fix |
| CVE-2024-9412 | Unscored | - | 0.4% | - | - |
| CVE-2024-25632 | High | 8.6 | 0.4% | - | Fix |
Common questions
How do I fix CVE-2026-73439?
No published fix for CVE-2026-73439 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-73439 being actively exploited?
Not that we know of. CVE-2026-73439 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.33% is the estimated probability that it will be exploited in the next 30 days. That is higher than 26% of all scored CVEs.
How severe is CVE-2026-73439?
CVE-2026-73439 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-17.