Heap buffer over-read via crafted SubjectArea length
Published Sep 13, 2026 · Updated Sep 13, 2026
Heap-based buffer over-read in TinyEXIF before 1.1.0 allows attackers to read beyond a heap buffer through crafted JPEG metadata. EntryParser::Fetch uses the SubjectArea element count from EXIF metadata to drive indexed reads and computes each two-byte offset without first bounding the full count against the JPEG buffer. An application must parse an attacker-supplied JPEG containing a crafted SubjectArea length; the disclosed consequence is an out-of-bounds read.
Summary
What happened
Heap-based buffer over-read in TinyEXIF before 1.1.0 allows attackers to read beyond a heap buffer through crafted JPEG metadata. EntryParser::Fetch uses the SubjectArea element count from EXIF metadata to drive indexed reads and computes each two-byte offset without first bounding the full count against the JPEG buffer. An application must parse an attacker-supplied JPEG containing a crafted SubjectArea length; the disclosed consequence is an out-of-bounds read.
The record
- CVE
- CVE-2026-38332
- Published
- Sep 13, 2026
- Updated
- Sep 13, 2026
- Vendor
- cdcseacave
- Product
- TinyEXIF
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 13, 2026CVE publishedPublication date reported by the CVE source.
- Sep 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <1.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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