FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload length into the caller-provided destination buffer, overflowing it when the payload exceeds the destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a packet whose payload exceeds the caller buffer size.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader
    (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload
    length into the caller-provided destination buffer, overflowing it when the payload exceeds the
    destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a
    smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a
    packet whose payload exceeds the caller buffer size. (CVE-2026-75143)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-3e109a0c85 advisory.

    Latest upstream bugfix release from 8.1 branch. Changes:
    https://code.ffmpeg.org/FFmpeg/FFmpeg/src/branch/release/8.1/Changelog .























Tenable has extracted the preceding description block directly from the Fedora 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 remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4150-1 advisory.

    - CVE-2026-58049: incorrect validation in the RASC video decoder can lead to an out-of-bounds heap write     and memory       corruption (bsc#1269550).
    - CVE-2026-64833: Out-of-Bounds Read via S/PDIF Muxer spdifenc.c (bsc#1272755).
    - CVE-2026-64834: Infinite Loop DoS via RTP/ASF Demuxer (bsc#1272757).
    - CVE-2026-65703: Out-of-Bounds Write in TDSC Video Decoder (bsc#1272759).
    - CVE-2026-65704: Out-of-Bounds Write via TY Demuxer and Shorten Decoder (bsc#1272760).
    - CVE-2026-65705: vf_floodfill Out-of-Bounds Write via filter_frame() (bsc#1272761).
    - CVE-2026-65706: vf_swaprect Out-of-Bounds Write via NV12 Frame Processing (bsc#1272762).
    - CVE-2026-66036: Heap Out-of-Bounds Write in vf_hqdn3d Filter (bsc#1272763).
    - CVE-2026-70628: signed integer underflows during subtitle buffer checks can cause heap buffer overflows     (bsc#1274268).
    - CVE-2026-70629: unvalidated decompressed frame sizes in video decoders can cause uninitialized heap     memory reads       (bsc#1274270).
    - CVE-2026-70630: unvalidated decompression sizes in Screenpresso frame decoding can cause uninitialized     heap memory       reads (bsc#1274282).
    - CVE-2026-70631: unvalidated decompression sizes in TIFF strip decoding can cause uninitialized heap     memory reads       (bsc#1274287).
    - CVE-2026-70632: unenforced frame dimensions in CineForm HD decoding can cause heap-based out-of-bounds     writes       (bsc#1274289).
    - CVE-2026-75142: stack buffer overflow in the MPEG-PS muxer (bsc#1276408).
    - CVE-2026-75143: heap buffer overflow in the RIST protocol reader (bsc#1276409).
    - CVE-2026-75144: heap buffer overflow in the VC-2/Dirac RTP packetizer (bsc#1276410).
    - CVE-2026-75146: out-of-bounds read in the DASH demuxer (bsc#1276412).

Tenable has extracted the preceding description block directly from the SUSE 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 remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4149-1 advisory.

    - CVE-2026-58049: incorrect validation in the RASC video decoder can lead to an out-of-bounds heap write     and memory       corruption (bsc#1269550).
    - CVE-2026-64833: Out-of-Bounds Read via S/PDIF Muxer spdifenc.c (bsc#1272755).
    - CVE-2026-64834: Infinite Loop DoS via RTP/ASF Demuxer (bsc#1272757).
    - CVE-2026-65703: Out-of-Bounds Write in TDSC Video Decoder (bsc#1272759).
    - CVE-2026-65704: Out-of-Bounds Write via TY Demuxer and Shorten Decoder (bsc#1272760).
    - CVE-2026-65705: vf_floodfill Out-of-Bounds Write via filter_frame() (bsc#1272761).
    - CVE-2026-65706: vf_swaprect Out-of-Bounds Write via NV12 Frame Processing (bsc#1272762).
    - CVE-2026-66036: Heap Out-of-Bounds Write in vf_hqdn3d Filter (bsc#1272763).
    - CVE-2026-70628: signed integer underflows during subtitle buffer checks can cause heap buffer overflows     (bsc#1274268).
    - CVE-2026-70629: unvalidated decompressed frame sizes in video decoders can cause uninitialized heap     memory reads       (bsc#1274270).
    - CVE-2026-70630: unvalidated decompression sizes in Screenpresso frame decoding can cause uninitialized     heap memory       reads (bsc#1274282).
    - CVE-2026-70631: unvalidated decompression sizes in TIFF strip decoding can cause uninitialized heap     memory reads       (bsc#1274287).
    - CVE-2026-70632: unenforced frame dimensions in CineForm HD decoding can cause heap-based out-of-bounds     writes       (bsc#1274289).
    - CVE-2026-75142: stack buffer overflow in the MPEG-PS muxer (bsc#1276408).
    - CVE-2026-75143: heap buffer overflow in the RIST protocol reader (bsc#1276409).
    - CVE-2026-75144: heap buffer overflow in the VC-2/Dirac RTP packetizer (bsc#1276410).
    - CVE-2026-75146: out-of-bounds read in the DASH demuxer (bsc#1276412).

Tenable has extracted the preceding description block directly from the SUSE 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 remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8716-1 advisory.

    It was discovered that FFmpeg incorrectly handled certain crafted media files in the VobSub subtitle     demuxer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-64830)

    It was discovered that FFmpeg incorrectly handled certain crafted DTS audio streams in the S/PDIF muxer.
    An attacker could possibly use this issue to cause a denial of service or expose sensitive information.
    (CVE-2026-64833)

    It was discovered that FFmpeg incorrectly handled certain crafted RTP/ASF streams. An attacker could     possibly use this issue to cause a denial of service. (CVE-2026-64834)

    It was discovered that FFmpeg incorrectly handled certain crafted ADX audio files. This issue only     affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-64835)

    It was discovered that FFmpeg incorrectly handled certain crafted AVI files in the TDSC video decoder. An     attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-65703)

    It was discovered that FFmpeg incorrectly handled certain crafted ffconcat files processed via the TY     demuxer. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS.
    (CVE-2026-65704)

    It was discovered that FFmpeg incorrectly handled certain crafted video streams in the vf_floodfill video     filter. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04     LTS. (CVE-2026-65705)

    It was discovered that FFmpeg incorrectly handled certain crafted NV12 video frames in the vf_swaprect     video filter. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu     24.04 LTS. (CVE-2026-65706)

    It was discovered that FFmpeg incorrectly handled certain crafted hvcC NAL arrays in the HEVC parser. An     attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-75141)

    It was discovered that FFmpeg incorrectly handled certain crafted MPEG system headers. An attacker could     possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-75142)

    It was discovered that FFmpeg incorrectly handled certain crafted network input in the librist protocol     handler. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-75143)

    It was discovered that FFmpeg incorrectly handled certain crafted Dirac data units in the VC2 HQ RTP     packetizer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary     code. (CVE-2026-75144)

    It was discovered that FFmpeg incorrectly handled certain crafted DASH manifests. This issue only affected     Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-75146)

Tenable has extracted the preceding description block directly from the Ubuntu 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - FFmpeg before commit 1c10bcc contains a heap buffer overflow in the RIST protocol reader     (libavformat/librist.c). librist_read() ignored its size argument and copied the full received payload     length into the caller-provided destination buffer, overflowing it when the payload exceeds the     destination size. This is reachable via the async:rist:// URL scheme, where the async wrapper supplies a     smaller buffer than the received payload. A remote RIST sender can trigger the overflow by sending a     packet whose payload exceeds the caller buffer size. (CVE-2026-75143)

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

ID	Name	Product	Family	Type	Severity
457421	Echo: ffmpeg: security update to 7:7.1.5-0+deb13u1+e5	Tenable Cloud Security	Echo Local Security Checks	Local	critical
457421	Echo: ffmpeg: security update to 7:7.1.5-0+deb13u1+e5	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	critical
358433	Fedora 44 : ffmpeg (2026-3e109a0c85)	Nessus	Fedora Local Security Checks	Local	critical
346223	SUSE SLES15: libavcodec58_134 / libavformat58_76 / libavutil56_70 / etc (SUSE-SU-2026:4150-1)	Nessus	SuSE Local Security Checks	Local	critical
346205	SUSE SLED15: ffmpeg-4 / ffmpeg-4-libavcodec-devel / ffmpeg-4-libavdevice-devel / etc (SUSE-SU-2026:4149-1)	Nessus	SuSE Local Security Checks	Local	critical
344622	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : FFmpeg vulnerabilities (USN-8716-1)	Nessus	Ubuntu Local Security Checks	Local	critical
338196	Linux Distros Unpatched Vulnerability : CVE-2026-75143	Nessus	Misc.	Local	critical

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