What is CVE-2022-22281?

CVE-2022-22281 is a high-severity vulnerability in SonicWall Netextender, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2022-05-13.

How severe is CVE-2022-22281?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in SonicWall Netextender

CVE-2022-22281

A buffer overflow vulnerability in the SonicWall SSL-VPN NetExtender Windows Client (32 and 64 bit) in 10.2.322 and earlier versions, allows an attacker to potentially execute arbitrary code in the host windows operating system.

Vulnerability class: Buffer Overflow

Published 2022-05-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

SonicWall Netextender
SonicWall Netextender Windows (32 And 64 Bit) Client — versions 10.2.322 and earlier versions

Weakness classification (CWE)

References

psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0008 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-22281?: CVE-2022-22281 is a high-severity vulnerability in SonicWall Netextender, classified under Stack-based Buffer Overflow. CVSS score: 7.8/10. Published 2022-05-13.
How severe is CVE-2022-22281?: High severity. CVSS v3 base score is 7.8 out of 10.