Application crash via wrapped image-plane allocation
Published Jun 19, 2026 · Updated Jun 19, 2026
Heap buffer overflow in Struktur AG libde265 before 1.1.0 allows remote attackers to crash decoding applications via crafted H.265 data. de265_image_get_buffer multiplies 32-bit plane height and stride values before allocation, allowing the product to wrap the requested buffer size while fill_image writes the full size. Exploitation requires an application using the library to process attacker-controlled media, and the resulting out-of-bounds write corrupts heap memory.
Summary
What happened
Heap buffer overflow in Struktur AG libde265 before 1.1.0 allows remote attackers to crash decoding applications via crafted H.265 data. de265_image_get_buffer multiplies 32-bit plane height and stride values before allocation, allowing the product to wrap the requested buffer size while fill_image writes the full size. Exploitation requires an application using the library to process attacker-controlled media, and the resulting out-of-bounds write corrupts heap memory.
The record
- CVE
- CVE-2026-49346
- Published
- Jun 19, 2026
- Updated
- Jun 19, 2026
- Vendor
- Struktur AG
- Product
- libde265
- Classifications
- CWE-190, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 19, 2026CVE publishedPublication date reported by the CVE source.
- Jun 19, 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=< 1.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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