CVE-2022-21375

Local service interruption via undisclosed kernel flaw

Published Jan 19, 2022 · Updated Sep 24, 2024

Denial of service in the Oracle Solaris 11 kernel allows local users to hang the operating system or cause repeatable crashes. Oracle identifies the affected component only as the kernel and has not disclosed the faulty operation or the input that triggers it. Exploitation requires a low-privileged user with a logon to the host, and the reported consequence is limited to a hang or frequently repeatable crash.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Oracle Solaris 11 kernel allows local users to hang the operating system or cause repeatable crashes. Oracle identifies the affected component only as the kernel and has not disclosed the faulty operation or the input that triggers it. Exploitation requires a low-privileged user with a logon to the host, and the reported consequence is limited to a hang or frequently repeatable crash.

The record

CVE
CVE-2022-21375
Published
Jan 19, 2022
Updated
Sep 24, 2024
Vendor
Oracle
Product
Oracle Solaris
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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?

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  1. Affected versionversion=11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Oracle · Oracle Solarisversion=11

Published CVSS scores

5.5OracleCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.9NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:C

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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