CVE-2021-29645

Local privilege escalation via arbitrary window messages

Published Oct 12, 2021 · Updated Aug 3, 2024

Local privilege escalation in Hitachi JP1/IT Desktop Management 2 Agent 9 through 12 allows local users to execute arbitrary code. A local pipe accepts attacker-controlled arguments and passes them to the Windows SendMessageTimeoutW API without adequate validation. Low-privileged access to the local system is required, and successful exploitation runs code with the agent's elevated privileges.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in Hitachi JP1/IT Desktop Management 2 Agent 9 through 12 allows local users to execute arbitrary code. A local pipe accepts attacker-controlled arguments and passes them to the Windows SendMessageTimeoutW API without adequate validation. Low-privileged access to the local system is required, and successful exploitation runs code with the agent's elevated privileges.

The record

CVE
CVE-2021-29645
Published
Oct 12, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 12, 2021CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.0HitachiAV:L/AC:H/Au:S/C:C/I:C/A:C
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.0HitachiCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/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.

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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

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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