CVE-2023-43789Public exploit

Memory disclosure via corrupted XPM colormap

Published Oct 12, 2023 · Updated Nov 6, 2025

Out-of-bounds read in X.Org libXpm before 3.5.17 allows local users to disclose process memory through a crafted XPM colormap. The X.Org advisory states that the corrupted colormap causes the read but does not identify the parser function or unchecked operation. An application must open the attacker-supplied XPM file; the flaw reads adjacent memory without changing data or interrupting service.

CVSS severity5.5
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in X.Org libXpm before 3.5.17 allows local users to disclose process memory through a crafted XPM colormap. The X.Org advisory states that the corrupted colormap causes the read but does not identify the parser function or unchecked operation. An application must open the attacker-supplied XPM file; the flaw reads adjacent memory without changing data or interrupting service.

The record

CVE
CVE-2023-43789
Published
Oct 12, 2023
Updated
Nov 6, 2025
Vendor
X.Org
Product
libXpm
Classifications
CWE-125, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2025Record 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=0 <3.5.17

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

X.Org · libXpmversion=0 <3.5.17
Red Hat · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Red Hat · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.

Published CVSS scores

5.5NISTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1204.002Malicious File

Public exploit references

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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