CVE-2026-49295CWE-787

libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPS

High · published June 19, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
26.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00338 · 26.0th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-06-19T20:09Z
EPSS history
Timeline
  • 19 JUN 20:09Z
    libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPS
    cvelistv5