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Heap out-of-bounds read in LodePNG getFilterTypesInterlaced()

Priority MEDIUM 64CWE-125Published · Updated

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

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00187 8th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
lvandevelodepngup to 20261006—No fix listedCNA
  • lodepng Vendorlvandeve Affected up to 20261006 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for lodepng.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-112020
  2. 2026-10-18 Alias added: GHSA-245m-8wv4-4xg8
  3. 2026-10-19 Priority changed: MEDIUM → LOW
  4. 2026-10-21 Affected versions changed · Red Hat
  5. 2026-10-21 CVSS score added · Red Hat
  6. 2026-10-22 CISA SSVC decision points changed
  7. 2026-10-22 Priority changed: LOW → MEDIUM

References

Sources