Email Security and management
CVE-2026-81939: Zip Slip in Network Security Manager (NSM)
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Network Security Manager (NSM) (Linux, On-Prem) 4.3 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.