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CVE-2026-49295— libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPS

Quick assessment

Affected
strukturag libde265
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

strukturag libde265是strukturag公司的一个处理HEVC视频编码的库。 strukturag libde265 1.0.20之前版本存在缓冲区错误漏洞，该漏洞源于对预测的短时参考图像集条目缺少聚合边界检查，可能导致越界数组写入。

CVSS 7.1 · High EPSS 0.34% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
strukturag libde265 < 1.0.20 affected
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I. Basic Information for CVE-2026-49295

Vulnerability Information
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Vulnerability Title
libde265 has an out-of-bounds write in process_reference_picture_set via predicted short-term RPS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
strukturag libde265 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
strukturag libde265是strukturag公司的一个处理HEVC视频编码的库。 strukturag libde265 1.0.20之前版本存在缓冲区错误漏洞，该漏洞源于对预测的短时参考图像集条目缺少聚合边界检查，可能导致越界数组写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
strukturag libde265 < 1.0.20 -

II. Public POCs for CVE-2026-49295

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8204 chars
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III. Intelligence Information for CVE-2026-49295

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Patches & Fixes for CVE-2026-49295 (1)

Vendor Advisories for CVE-2026-49295 (1)

Same Patch Batch · strukturag · 2026-06-19 · 4 CVEs total

CVE-2026-49346 7.1 HIGH libde265 has a heap buffer overflow in de265_image_get_buffer via SPS dimension integer ov
CVE-2026-49271 6.5 MEDIUM libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompresse
CVE-2026-49337 4.3 MEDIUM libde265 has an unbounded memory leak via orphaned slice headers in `read_slice_NAL`

IV. Related Vulnerabilities

Same product: libde265
Same vendor: strukturag
Same weakness: CWE-787

V. Comments for CVE-2026-49295

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