CVE-2022-22281

Code execution via stack buffer overflow

Published May 13, 2022 · Updated Aug 3, 2024

A buffer overflow in SonicWall NetExtender Windows Client 10.2.322 and earlier allows attackers to execute arbitrary code via crafted input. The vendor record does not disclose the exact function, driver locus, or input field that receives the overflowing data. Local users with low privileges can reach the client and may gain code execution in the host Windows operating system; active exploitation details are not publicly documented.

CVSS severity7.8
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A buffer overflow in SonicWall NetExtender Windows Client 10.2.322 and earlier allows attackers to execute arbitrary code via crafted input. The vendor record does not disclose the exact function, driver locus, or input field that receives the overflowing data. Local users with low privileges can reach the client and may gain code execution in the host Windows operating system; active exploitation details are not publicly documented.

The record

CVE
CVE-2022-22281
Published
May 13, 2022
Updated
Aug 3, 2024
Vendor
SonicWall
Product
SonicWall NetExtender
Classifications
CWE-121, CWE-120, T1203
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.2.322 and earlier versions

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

SonicWall · SonicWall NetExtenderversion=10.2.322 and earlier versions

Published CVSS scores

7.2NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
CWE-120Buffer Overflow
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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