A buffer overflow vulnerability in the SonicWall SSL-VPN NetExtender Windows Client (32 and 64 bit) in 10.2.322 and earlier versions, allow…

published 2022-05-13 4y ago modified 2026-06-17 4mo ago also EUVD-2022-27428

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits: 0; none known

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.

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Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

SonicWall SonicWall NetExtender Windows (32 and 64 bit) Client

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-120 Buffer Copy without Checking Size of Input

References

psirt.global.sonicwall.com /vuln-detail/SNWLID-2022-0008
vendor-advisory

Sources

CVE List CVE-2022-22281
NVD CVE-2022-22281

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