Vulnerability · Published Apr 29, 2026 · Assigned by sonicwall

CVE-2026-0206

Medium 4.9

In plain English

A medium-severity stack buffer overflow in SonicOS from SonicWall. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)4.9Medium

Exploit odds (30 days)0.5%top 56.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
SonicWall	SonicOS	6.5.5.1-6n and older versions7.0.1-5169 and older versions7.3.1-7013 and older versions8.1.0-8017 and older versions

Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0004 vendor-advisory