CVE-2025-6663

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2025-6663

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6663.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-6663

Downstream

Published

2025-07-07T14:58:01Z

Modified

2026-10-22T07:12:02Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator

Summary

GStreamer H266 Codec Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

Details

GStreamer H266 Codec Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the parsing of H266 sei messages. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-27381.

Database specific

{
    "cna_assigner":  "zdi",
    "cwe_ids":  [
        "CWE-121"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6663.json"
}

References

Affected packages

Git / gitlab.freedesktop.org/tpm/gstreamer

Affected ranges

Type

GIT

Repo

https://gitlab.freedesktop.org/tpm/gstreamer

Events

Introduced

97fec43422c4b62d569957d721c899bdaaa9da61

Fixed

eedd01ac3dfeb60e36a44bb61a6d0418454e8416

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "97fec43422c4b62d569957d721c899bdaaa9da61"
                },
                {
                    "last_affected":  "97fec43422c4b62d569957d721c899bdaaa9da61"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "eedd01ac3dfeb60e36a44bb61a6d0418454e8416"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

Other

97fec43422c4b62d569957d721c899bdaaa9da61

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6663.json"

vanir_signatures

[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "59396683329592101066390449792267569397",
            "length":  1309
        },
        "id":  "CVE-2025-6663-16ee0d02",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://gitlab.freedesktop.org/tpm/gstreamer@eedd01ac3dfeb60e36a44bb61a6d0418454e8416",
        "target":  {
            "file":  "subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gsth266parser.c",
            "function":  "gst_h266_parser_parse_subpic_level_info"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "322408239375824235697640610182103157177",
                "329466281688453152582059337400564552111",
                "168822257613181838628534821740698720000",
                "84112443985815107248594045212452426335"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2025-6663-32998ece",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://gitlab.freedesktop.org/tpm/gstreamer@eedd01ac3dfeb60e36a44bb61a6d0418454e8416",
        "target":  {
            "file":  "subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gsth266parser.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "282721078568479293220300600191289648421",
                "207950569463079125622255997821643194131",
                "122461571103047695134343158452303403193",
                "61310300654916042450068896710544154369",
                "300671058316152478926398899082983972055",
                "254139904553242124958572292244909832683",
                "161270349155485064805213336790063386020",
                "5487045547213773508244965838854026915",
                "305777191737961159622308043516693816406"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2025-6663-86225344",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://gitlab.freedesktop.org/tpm/gstreamer@eedd01ac3dfeb60e36a44bb61a6d0418454e8416",
        "target":  {
            "file":  "subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gsth266parser.h"
        }
    }
]

vanir_signatures_modified

"2026-10-22T07:12:02Z"