CVE-2026-112008
libmng through 2.0.3 Heap Buffer Overflow via ORDR Chunk Reader mng_read_ordr
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-131 |
| Vendor | libmng |
| Product | libmng |
| Published | Oct 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Affected Versions
libmng / libmng
0 ≤ 2.0.3
References
hackmd.io: https://hackmd.io/@haindpwn/libmng-ordr-chunk-store-oob-write sourceforge.net: https://sourceforge.net/projects/libmng/files/libmng-devel/2.0.3/ sourceforge.net: https://sourceforge.net/projects/libmng/ vulncheck.com: https://www.vulncheck.com/advisories/libmng-through-2.0.3-heap-buffer-overflow-via-ordr-chunk-reader-mng-read-ordr
Credits
HaiND from the Post and Telecommunication Institute of Technology