CVE-2026-112008

medium

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.

References

https://www.vulncheck.com/advisories/libmng-through-2.0.3-heap-buffer-overflow-via-ordr-chunk-reader-mng-read-ordr

https://sourceforge.net/projects/libmng/files/libmng-devel/2.0.3/

https://sourceforge.net/projects/libmng/

https://hackmd.io/@haindpwn/libmng-ordr-chunk-store-oob-write

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103461

Details

Source: Mitre, NVD

Published: 2026-10-18

Updated: 2026-10-18

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:C

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Severity: Medium

CVSS v4

Base 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

Severity: Medium

EPSS

EPSS: 0.00143