CVE-2026-81939
CVSS v3
9.1
CRITICAL
EPSS Score
0.7 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2026-09-04
- Last Modified
- 2026-09-04
Frequently asked questions
What is CVE-2026-81939?
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.
Is CVE-2026-81939 actively exploited?
Active exploitation of CVE-2026-81939 has not been confirmed. Its EPSS score was 0.7% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-81939?
CVE-2026-81939 has a CVSS v3 base score of 9.1 (CRITICAL severity).
Is CVE-2026-81939 affecting your environment?
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