CVE-2026-33165

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Source
https://cve.org/CVERecord?id=CVE-2026-33165
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33165.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33165
Aliases
  • GHSA-653q-9f73-8hvg
Downstream
Published
2026-03-20T20:32:36.603Z
Modified
2026-07-15T02:19:09.676063427Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
heap out-of-bounds write in libde265 1.0.16
Details

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctbinfo.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing setSliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation. This issue has been patched in version 1.0.17.

Database specific 
{
    "cwe_ids": [
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33165.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/strukturag/libde265

Affected ranges

Type
GIT
Repo
https://github.com/strukturag/libde265
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f3d916c8e63e510bda1f9cf5e8710259c22afece
Fixed
c7891e412106130b83f8e8ea8b7f907e9449b658
Database specific 
{
    "cpe": "cpe:2.3:a:struktur:libde265:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.0.17"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.1
v0.2
v0.3
v0.4
v0.5
v1.*
v1.0.0
v1.0.10
v1.0.11
v1.0.12
v1.0.13
v1.0.14
v1.0.15
v1.0.16
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33165.json"