CVE-2023-21900Network attack vector

Privileged data modification and partial service interruption

Published Jan 17, 2023 · Updated Sep 16, 2024

An unspecified flaw in NSSwitch in Oracle Solaris 10 and 11 allows remote authenticated users to alter data and interrupt service. Oracle has not published the faulty NSSwitch operation or the input path that triggers it. Exploitation requires high privileges, network access over multiple protocols, high complexity, and interaction by another person; successful attacks can modify some accessible data and partially interrupt service.

CVSS severity4.0
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An unspecified flaw in NSSwitch in Oracle Solaris 10 and 11 allows remote authenticated users to alter data and interrupt service. Oracle has not published the faulty NSSwitch operation or the input path that triggers it. Exploitation requires high privileges, network access over multiple protocols, high complexity, and interaction by another person; successful attacks can modify some accessible data and partially interrupt service.

The record

CVE
CVE-2023-21900
Published
Jan 17, 2023
Updated
Sep 16, 2024
Vendor
Oracle
Product
Oracle Solaris
Classifications
Unavailable
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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. Affected versionversion=11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle · Oracle Solarisversion=10; version=11

Published CVSS scores

4.0OracleCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:L

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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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