PT-2026-22896 · Sonicwall · Sonicos

Published 2026-03-04 · Updated 2026-03-04 · CVE-2026-3439

Positive Technologies (AI Summary)

CVSS v3.1

4.9

Medium

Base vector

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions SonicOS (affected versions not specified)

Description A post-authentication Stack-based Buffer Overflow exists in the certificate handling process. This allows a remote attacker to crash the firewall. The issue occurs after successful authentication. A Stack-based Buffer Overflow happens when a program writes beyond the boundaries of a buffer allocated on the stack, potentially overwriting adjacent memory and causing a crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-3439

Affected Products

Sonicos

References · 10

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0001 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3439 · Security Note
• https://osv.dev/vulnerability/CVE-2026-3439 · Vendor Advisory
• https://twitter.com/cyberbivash/status/2029175049404432513 · Twitter Post
• https://twitter.com/infoflowcloud/status/2029161447893119454 · Twitter Post
• https://t.me/CVEtracker/46306 · Telegram Post
• https://twitter.com/CVEarity/status/2029239131398914315 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2029228840455651537 · Twitter Post
• https://twitter.com/CVEnew/status/2029159936744407396 · Twitter Post
• https://t.me/cveNotify/154097 · Telegram Post