Out-of-bounds Read in Lvandeve Lodepng
CVE-2026-112020
LodePNG through 20261006 contains a heap out-of-bounds read vulnerability in lodepng::getFilterTypesInterlaced() in lodepng_util.cpp that lacks bounds checks on decompressed IDAT data. Attackers can supply a crafted interlaced PNG declaring a raster larger than its IDAT stream to disclose adjacent heap memory or crash applications.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haindpwn/lodepng-getfiltertypesinterlaced-short-idat-oob-read (technical-description)
- github.com/lvandeve/lodepng/blob/e584a8490db1b76b81bf298c11c09d3b55d9c270/lodep… (technical-description)
- github.com/lvandeve/lodepng (product)
- www.vulncheck.com/advisories/lodepng-through-20261006-heap-out-of-bounds-read-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112020?
- CVE-2026-112020 is a medium-severity vulnerability in Lvandeve Lodepng, classified under Out-of-bounds Read. CVSS score: 6.1/10. Published 2026-10-18.
- How severe is CVE-2026-112020?
- Medium severity. CVSS v3 base score is 6.1 out of 10.