CVE-2022-25949

Local privilege escalation via kwatch3 stack overflow

Published Mar 17, 2022 · Updated Aug 3, 2024

Stack-based buffer overflow in kwatch3 in KINGSOFT Internet Security 9 Plus 2010.06.23.247 allows local users to gain privileges. The kernel-mode driver processes crafted local input without adequate bounds handling, overflowing its stack after shellcode is placed in memory. A nonprivileged user must already be able to log on to the Windows host; successful exploitation grants administrative privileges and kernel-mode code execution.

CVSS severity8.8
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in kwatch3 in KINGSOFT Internet Security 9 Plus 2010.06.23.247 allows local users to gain privileges. The kernel-mode driver processes crafted local input without adequate bounds handling, overflowing its stack after shellcode is placed in memory. A nonprivileged user must already be able to log on to the Windows host; successful exploitation grants administrative privileges and kernel-mode code execution.

The record

CVE
CVE-2022-25949
Published
Mar 17, 2022
Updated
Aug 3, 2024
Vendor
Kingsoft Japan, Inc.
Product
KINGSOFT Internet Security 9 Plus
Classifications
CWE-787, CWE-121, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 17, 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=Reported for Version 2010.06.23.247

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Kingsoft Japan, Inc. · KINGSOFT Internet Security 9 Plusversion=Reported for Version 2010.06.23.247

Published CVSS scores

6.8JPCERT/CCAV:L/AC:L/Au:S/C:C/I:C/A:C
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
8.8JPCERT/CCCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
7.8NIST NVDCVSS: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-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
T1068Exploitation for Privilege Escalation

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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