CVEvulnerability

CVE-2021-28503

9.8 CRITICAL Published 2022-02-04 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-02-04
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-287, CWE-305

Description

The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.

Affected configurations

• arista eos (>= 4.22 <= 4.22.9m) • arista eos (>= 4.23 <= 4.23.9) • arista eos (>= 4.24 <= 4.24.7) • arista eos (>= 4.25 <= 4.25.5) • arista eos (>= 4.26 <= 4.26.2)

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-305 Authentication Bypass by Primary Weakness weakness

References