Vulnerability details

CVE-2026-81939

SonicWall Network Security Manager

CVSS 3.1

9.1Critical

Official description

A Zip Slip vulnerability in the SonicWall Network Security Manager (NSM) On-Prem file upload and archive processing functionality allows an attacker to extract files outside the intended destination directory using a specially crafted archive.

CVSS scores

Score	Version	Source	Vector
9.1Critical	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
SonicWall	Network Security Manager (NSM)	4.3.0 and earlier versions	CVEProject cvelistV5 (CNA)

References and advisories

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0015 vendor-advisory

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Details

Published: 2026-09-04
Last updated: 2026-09-04
State: Published
Assigner (CNA): sonicwall

Exploit prediction (EPSS)

0.67%

Probability of exploitation in 30 days

52.5%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')