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bzip2 EUVD-2026-32898

| CVE-2026-42250 MEDIUM
Out-of-bounds Write (CWE-787)
2026-05-28 cvd@cert.pl GHSA-9r29-3vrx-4537
5.1
CVSS 4.0
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CVSS VectorNVD

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Patch available
May 28, 2026 - 15:01 EUVD
Analysis Generated
May 28, 2026 - 14:33 vuln.today

DescriptionNVD

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

AnalysisAI

Out-of-bounds write in bzip2's bzip2recover utility allows a local attacker to supply a specially crafted file that triggers an off-by-one error, corrupting a global buffer and crashing the process. Per the CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:N/UI:N), the attack requires no privileges and no user interaction beyond the utility being invoked against a malicious file. …

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EUVD-2026-32898 vulnerability details – vuln.today

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