CVE-2026-112008

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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://hackmd.io/@haindpwn/libmng-ordr-chunk-store-oob-write
https://sourceforge.net/projects/libmng/
https://sourceforge.net/projects/libmng/files/libmng-devel/2.0.3/
https://www.vulncheck.com/advisories/libmng-through-2.0.3-heap-buffer-overflow-via-ordr-chunk-reader-mng-read-ordr

Configurations

No configuration.

History

18 Oct 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-18 12:17

Updated : 2026-10-19 21:14

NVD link : CVE-2026-112008

Mitre link : CVE-2026-112008

CVE.ORG link : CVE-2026-112008

JSON object : View

Products Affected

No product.

CWE

CWE-131

Incorrect Calculation of Buffer Size

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