CVE-2026-49295
High
Description
libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. Version 1.0.20 patches the issue.
SeverityHigh
CVSS7.1
Exploit probability—
ProductStruktur Libde265
PublishedJun 19, 2026
First seenJun 19, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- struktur libde2651.0.20 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| struktur libde265 | v < 1.0.20 | 1.0.20 |
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