Vulnerability · Published Oct 18, 2026 · Assigned by VulnCheck
CVE-2026-112020LodePNG through 20261006 Heap Out-of-Bounds Read via getFilterTypesInterlaced()
Medium 6.1
In plain English
A medium-severity out-of-bounds read in lodepng from lvandeve. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 91.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
- https://hackmd.io/@haindpwn/lodepng-getfiltertypesinterlaced-short-idat-oob-read technical-description
- https://github.com/lvandeve/lodepng/blob/e584a8490db1b76b81bf298c11c09d3b55d9c270/lodepng_util.cpp#L185-L203 technical-description
- https://github.com/lvandeve/lodepng product
- VulnCheck Advisory: LodePNG through 20261006 Heap Out-of-Bounds Read via getFilterTypesInterlaced() third-party-advisory
- https://hackmd.io/@haindpwn/cve-2026-112020-lodepng-getfiltertypesinterlaced-short-idat-oob-read exploit