Heap out-of-bounds read in LodePNG getFilterTypesInterlaced()
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
LodePNG through 20261006 contains a heap out-of-bounds read in lodepng::getFilterTypesInterlaced() in lodepng_util.cpp (CWE-125). The code lacks bounds checks on decompressed IDAT data. A local attacker who gets a user to open a crafted interlaced PNG file that declares a raster larger than its IDAT stream can read adjacent heap memory or crash the application.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for lodepng.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Vendor assessments
Timeline
- 2026-10-18 Threatist record created from CVE-2026-112020
- 2026-10-18 Alias added: GHSA-245m-8wv4-4xg8
- 2026-10-19 Priority changed: MEDIUM → LOW
- 2026-10-21 Affected versions changed · Red Hat
- 2026-10-21 CVSS score added · Red Hat
- 2026-10-22 CISA SSVC decision points changed
- 2026-10-22 Priority changed: LOW → MEDIUM
References
Sources
- CVE-2026-112020 · CVE Program
- CVE-2026-112020 · NVD
- FIRST EPSS
- GHSA-245m-8wv4-4xg8 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-112020 · Red Hat security data · CC BY 4.0
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