CVE-2026-73460CWE-863broken-access-control

CVE-2026-73460

Medium · published September 16, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
8.9
In the wild
Unconfirmed
What it is

On affected platforms running Arista EOS with IS-IS graceful restart enabled, an unauthenticated attacker who can inject a malformed IS-IS LSP PDU packet can cause the IS-IS graceful restart procedure to terminate prematurely. This may result in traffic loss following a restart event.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
7.0 · CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
EPSS
0.00197 · 8.9th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-16T04:17Z
References (1)
https://www.arista.com/en/support/advisories-notices/security-advisory/24716-security-advisory-0160 · [email protected]
EPSS history
Timeline
  • 17 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 15 SEP 23:20Z
    Security Advisory 0160
    cvelistv5