CVE-2026-3439CWE-121

A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall

Medium · published March 4, 2026

CVSS v3.1
4.9
EPSS
0%
Percentile
33.8
In the wild
Unconfirmed
What it is

A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall.

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00406 · 33.8th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-03-04T09:19Z
EPSS history
Timeline
  • 04 MAR 09:19Z
    A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall
    cvelistv5