A flaw was found in FFmpeg's TTY Demuxer. This vulnerability allows possible data exfiltration via improper parsing of non-TTY-compliant input files in HLS playlists.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104825 advisory.

    A flaw was found in FFmpeg's TTY Demuxer. This vulnerability allows possible data exfiltration via     improper parsing of non-TTY-compliant input files in HLS playlists.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - A vulnerability, which was classified as critical, was found in FFmpeg up to 7.1. This affects the
    function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of the component AAC Encoder. The
    manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The
    exploit has been disclosed to the public and may be used. (CVE-2025-1594)

  - A flaw was found in FFmpeg's TTY Demuxer. This vulnerability allows possible data exfiltration via
    improper parsing of non-TTY-compliant input files in HLS playlists. (CVE-2023-6602)

  - A flaw was found in FFmpeg. This vulnerability allows unexpected additional CPU load and storage
    consumption, potentially leading to degraded performance or denial of service via the demuxing of
    arbitrary data as XBIN-formatted data without proper format validation. (CVE-2023-6604)

  - A flaw was found in FFmpeg's DASH playlist support. This vulnerability allows arbitrary HTTP GET requests
    to be made on behalf of the machine running FFmpeg via a crafted DASH playlist containing malicious URLs.
    (CVE-2023-6605)

  - Unchecked Return Value, Out-of-bounds Read vulnerability in FFmpeg allows Read Sensitive Constants Within
    an Executable. This vulnerability is associated with program files
    https://github.Com/FFmpeg/FFmpeg/blob/master/libavfilter/af_pan.C . This issue affects FFmpeg: 7.1. Issue
    was fixed: https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a
    https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a This issue was discovered
    by: Simcha Kosman (CVE-2025-0518)

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - A vulnerability, which was classified as critical, was found in FFmpeg up to 7.1. This affects the
    function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of the component AAC Encoder. The
    manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The
    exploit has been disclosed to the public and may be used. (CVE-2025-1594)

  - A flaw was found in FFmpeg's TTY Demuxer. This vulnerability allows possible data exfiltration via
    improper parsing of non-TTY-compliant input files in HLS playlists. (CVE-2023-6602)

  - A flaw was found in FFmpeg. This vulnerability allows unexpected additional CPU load and storage
    consumption, potentially leading to degraded performance or denial of service via the demuxing of
    arbitrary data as XBIN-formatted data without proper format validation. (CVE-2023-6604)

  - A flaw was found in FFmpeg's DASH playlist support. This vulnerability allows arbitrary HTTP GET requests
    to be made on behalf of the machine running FFmpeg via a crafted DASH playlist containing malicious URLs.
    (CVE-2023-6605)

  - Buffer Overflow vulnerability in Ffmpeg v.n6.1-3-g466799d4f5 allows a local attacker to execute arbitrary
    code via the config_eq_output function in the libavfilter/asrc_afirsrc.c:495:30 component.
    (CVE-2023-49501)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A flaw was found in FFmpeg's TTY Demuxer. This vulnerability allows possible data exfiltration via     improper parsing of non-TTY-compliant input files in HLS playlists. (CVE-2023-6602)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4241 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4241-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     July 14, 2025                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : ffmpeg     Version        : 7:4.3.9-0+deb11u1     CVE ID         : CVE-2023-6601 CVE-2023-6602 CVE-2023-6604 CVE-2023-6605

    Multiple vulnerabilities have been fixed in the multimedia framework FFmpeg.

    CVE-2023-6601

        Triggering arbitrary demuxers via base64 data URIs

    CVE-2023-6602

        Improper parsing of input files in HLS playlists

    CVE-2023-6604

        Demuxing of arbitrary data as XBIN-formatted data

    CVE-2023-6605

        Arbitrary HTTP GET requests via crafted DASH playlist

    For Debian 11 bullseye, these problems have been fixed in version     7:4.3.9-0+deb11u1.

    We recommend that you upgrade your ffmpeg packages.

    For the detailed security status of ffmpeg please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/ffmpeg

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0114 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2023-6602:
    A flaw was found in FFmpeg's TTY Demuxer. This vulnerability allows possible data exfiltration via     improper parsing of non-TTY-compliant input files in HLS playlists.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
340905	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: ffmpeg (UTSA-2026-104825)	Nessus	Unity Linux Local Security Checks	Local	medium
436230	Alpine: multiple ffmpeg packages: security update to 8.0-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
436230	Alpine: multiple ffmpeg packages: security update to 8.0-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high
436215	Alpine: multiple ffmpeg packages: security update to 7.1.1-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	medium
436215	Alpine: multiple ffmpeg packages: security update to 7.1.1-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	medium
256617	Linux Distros Unpatched Vulnerability : CVE-2023-6602	Nessus	Misc.	Local	medium
242064	Debian dla-4241 : ffmpeg - security update	Nessus	Debian Local Security Checks	Local	medium
239725	TencentOS Server 4: ffmpeg (TSSA-2025:0114)	Nessus	Tencent Local Security Checks	Local	medium

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