CVE-2026-81939CWE-22path-traversal

CVE-2026-81939

Critical · published September 4, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
51.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00679 · 51.8th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-09-04T23:17Z
References (1)
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0015 · [email protected]
EPSS history
Timeline
  • 06 SEP 03:33Z
    EPSS moved — → 1%
    epss
  • 04 SEP 18:22Z
    A Zip Slip vulnerability in the SonicWall Network Security Manager (NSM) On-Prem file upload and archive processing functionality allows an attacker to extract…
    cvelistv5