CVE-2026-81939

Published Sep 4, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Sonicwall
Sonicwall network Security Manager
Vendors & Products Sonicwall
Sonicwall network Security Manager
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Zip Slip Vulnerability in SonicWall Network Security Manager File Upload
Type Values Removed Values Added
Title Zip Slip Vulnerability in SonicWall Network Security Manager File Upload
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Type Values Removed Values Added
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.
Weaknesses CWE-22
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
sonicwall
Published
Updated
Sep 4, 2026, 7:48 PM
Reserved
Aug 27, 2026, 7:48 PM
Status
Awaiting Analysis
Published
Sep 4, 2026, 7:17 PM
Modified
Sep 8, 2026, 7:12 PM