Vulnerability · Published Sep 4, 2026 · Assigned by sonicwall
CVE-2026-81939
Critical 9.1
In plain English
A critical-severity path traversal in Network Security Manager (NSM) from SonicWall. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.7%top 47.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SonicWall | Network Security Manager (NSM) | 4.3.0 and earlier versions |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
References
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0015 vendor-advisory