Unrated severityNVD Advisory· Published Jun 21, 2026
ImageMagick - Heap Out-of-Bounds Read in PCD Decoder
CVE-2026-56378
Description
ImageMagick before 7.1.2-15 (and 6.x before 6.9.13-40) contains a heap out-of-bounds read in the PCD coder's DecodeImage loop. A crafted PCD file can trigger a one-byte heap out-of-bounds read during image decoding, resulting in denial of service and potential disclosure of an adjacent heap byte.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2<6.9.13-40, <7.1.2-15+ 1 more
- (no CPE)range: <6.9.13-40, <7.1.2-15
- (no CPE)range: >=6.x <6.9.13-40 || >=7.x <7.1.2-15
Patches
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
2- github.com/ImageMagick/ImageMagick/security/advisories/GHSA-wgxp-q8xq-wpp9mitrevendor-advisory
- www.vulncheck.com/advisories/imagemagick-heap-out-of-bounds-read-in-pcd-decodermitrethird-party-advisory
News mentions
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