libmng through 2.0.3 contains a heap-based buffer overflow vulnerability in mng_read_ordr() that allows attackers to corrupt heap memory because ORDR entry buffers are sized by 5-byte on-wire records instead of 8-byte in-memory entries. Attackers can supply a crafted MNG file with MHDR, DHDR and a multi-record ORDR chunk to applications calling mng_read or mng_readdisplay, writing attacker-controlled data past the allocation and crashing the application.
History

Mon, 19 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 19 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Libmng
Libmng libmng
Vendors & Products Libmng
Libmng libmng

Mon, 19 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-787
References
Metrics threat_severity

None

threat_severity

Moderate


Sun, 18 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
Description libmng through 2.0.3 contains a heap-based buffer overflow vulnerability in mng_read_ordr() that allows attackers to corrupt heap memory because ORDR entry buffers are sized by 5-byte on-wire records instead of 8-byte in-memory entries. Attackers can supply a crafted MNG file with MHDR, DHDR and a multi-record ORDR chunk to applications calling mng_read or mng_readdisplay, writing attacker-controlled data past the allocation and crashing the application.
Title libmng through 2.0.3 Heap Buffer Overflow via ORDR Chunk Reader mng_read_ordr
Weaknesses CWE-131
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-18T11:38:31.288Z

Updated: 2026-10-19T19:04:44.302Z

Reserved: 2026-10-18T01:23:45.646Z

Link: CVE-2026-112008

cve-icon Vulnrichment

Updated: 2026-10-19T19:04:39.013Z

cve-icon NVD

Status : Deferred

Published: 2026-10-18T12:17:13.247

Modified: 2026-10-19T21:14:14.150

Link: CVE-2026-112008

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-18T11:38:31Z

Links: CVE-2026-112008 - Bugzilla