CVE-2026-3439 — Stack-based Buffer Overflow in Sonicos

CWE-121 — Stack-based Buffer Overflow3 documents3 sources
Severity
4.9MEDIUMNVD
EPSS
0.1%
top 65.90%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Sonicwall Sonicos
Timeline
PublishedMar 4

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HExploitability: 1.2 | Impact: 3.6

Affected Packages2 packages

▶NVDsonicwall/sonicos< 7.3.2-7010+1
▶CVEListV5sonicwall/sonicos7.0.1-5169 and older versions, 7.3.1-7013 and older versions, 8.1.0-8017 and older versions+2

🔴Vulnerability Details

2
GHSA
GHSA-m887-q6ph-8x46: A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall↗2026-03-04
▶
CVEList
CVE-2026-3439: A post-authentication Stack-based Buffer Overflow vulnerability in SonicOS certificate handling allows a remote attacker to crash a firewall↗2026-03-04
▶
CVE-2026-3439 — Stack-based Buffer Overflow in Sonicos | cvebase