[Japanese]

JVNDB-2026-000070

libXpm vulnerable to out-of-bounds read

Overview

libXpm provided by X.Org Foundation incorrectly handles malformed XPM files, leading to an out-of-bounds read vulnerability.
  • Out-of-bounds read (CWE-125) - CVE-2026-4367
Naoki Wakamatsu reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 3.3 (Low) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low
CVSS v4 Severity
Base Metrics: 4.6 (Medium) [IPA Score]
  • Access Vector (AV): Local
  • Attack Complexity (AC): Low
  • Attack Requirements (AT): None
  • Privileges Required (PR): None
  • User Interaction (UI): Active
    • Vulnerable System Impact
  • Confidentiality Impact (VC): None
  • Integrity Impact (VI): None
  • Availability Impact (VA): Low
    • Subsequent System Impact
  • Confidentiality Impact (SC): None
  • Integrity Impact (SI): None
  • Availability Impact (SA): None
Affected Products


X.Org Foundation
  • libxpm versions prior to 3.5.19

Impact

Processing a malformed XPM file may cause the program crash.
Solution

[Update the Software]
Update the software to the latest version according to the information provided by the developer.
Vendor Information

X.Org Foundation
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2026-4367
References

  1. JVN : JVN#18013369
Revision History

  • [2026/05/11]
      Web page was published

Date Public2026/05/11
Date First Published2026/05/11
Date Last Updated2026/05/11