What’s Vulnerable › Vulnerabilities

CVE-2026-112020: LodePNG through 20261006 Heap Out-of-Bounds Read via getFilterTypesInterlaced()

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-18 · updated 2026-10-22
• Weakness: CWE-125

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

• lvandeve lodepng: through 20261006

References

• https://github.com/lvandeve/lodepng
• https://github.com/lvandeve/lodepng/blob/e584a8490db1b76b81bf298c11c09d3b55d9c270/lodepng_util.cpp#L185-L203
• https://hackmd.io/@haindpwn/lodepng-getfiltertypesinterlaced-short-idat-oob-read
• https://www.vulncheck.com/advisories/lodepng-through-20261006-heap-out-of-bounds-read-via-getfiltertypesinterlaced
• https://hackmd.io/@haindpwn/cve-2026-112020-lodepng-getfiltertypesinterlaced-short-idat-oob-read

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