CVE-2026-42250 - Vulnerability Details - OpenCVE

bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service). This issue was fixed in bzip2 version 1.0.9

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://cert.pl/en/posts/2026/05/CVE-2026-42250/
https://sourceware.org/bzip2/

History

Thu, 28 May 2026 15:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 28 May 2026 14:15:00 +0000

Type	Values Removed	Values Added
Description		bzip2 contains an off‑by‑one error in the bzip2recover utility. When processing a specially crafted file, the application performs an out‑of‑bounds write to a global buffer, resulting in memory corruption and a crash (denial of service). This issue was fixed in bzip2 version 1.0.9
Title		Off-by-One Leading to Out-of-Bounds Write in bzip2
Weaknesses		CWE-787
References		https://cert.pl/en/posts/2026/05/CVE-2026-42250/ https://sourceware.org/bzip2/
Metrics		cvssV4_0 `{'score': 5.1, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published: 2026-05-28T13:15:19.660Z

Updated: 2026-05-28T14:23:00.571Z

Reserved: 2026-04-25T11:31:56.229Z

Link: CVE-2026-42250

Vulnrichment

Updated: 2026-05-28T14:22:56.254Z

NVD

Status : Received

Published: 2026-05-28T14:16:19.890

Modified: 2026-05-28T14:16:19.890

Link: CVE-2026-42250

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-05-28T15:45:19Z

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