CVE-2026-120458

Kvazaar through 2.3.2 Infinite Loop DoS via Y4M Header Parser

Published Nov 2, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ultra Video Group
Ultra Video Group kvazaar
Vendors & Products Ultra Video Group
Ultra Video Group kvazaar
Type Values Removed Values Added
Description Kvazaar through 2.3.2 contains an infinite loop vulnerability in read_header() in src/encmain.c that allows attackers to hang the command-line encoder by supplying a truncated Y4M header. Attackers can provide a crafted .y4m file lacking a terminating newline, causing unchecked EOF reads that hang the process indefinitely while consuming a full CPU core.
Title Kvazaar through 2.3.2 Infinite Loop DoS via Y4M Header Parser
Weaknesses CWE-835
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 7, 2026, 12:19 AM
Reserved
Nov 2, 2026, 12:42 PM
Status
Deferred
Published
Nov 2, 2026, 3:17 PM
Modified
Nov 7, 2026, 1:17 AM