{"id":"CVE-2026-40962","aliases":["DEBIAN-CVE-2026-40962","EUVD-2026-23153","GHSA-48wr-p98v-9w5h","JLSEC-2026-652","MGASA-2026-0153","OESA-2026-2928","OESA-2026-3082","OESA-2026-3207","OESA-2026-3211","RHSA-2026:74089","SUSE-SU-2026:2444-1","SUSE-SU-2026:2445-1","UBUNTU-CVE-2026-40962","USN-8469-1","openSUSE-SU-2026:10767-1","openSUSE-SU-2026:10768-1","openSUSE-SU-2026:20726-1","openSUSE-SU-2026:21211-1"],"status":"published","title":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common...","description":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to 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(Common...","description":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.","status":"published","published":"2026-04-16T03:31:06Z","modified":"2026-04-16T03:31:12Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T15:07:31.233383Z"}],"nvd":[{"id":"CVE-2026-40962","description":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.","status":"published","published":"2026-04-16T02:16:12.227Z","modified":"2026-06-17T10:45:56.58Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:12:14.748836Z"}],"osv":[{"id":"CVE-2026-40962","description":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.","status":"published","published":"2026-04-16T01:33:37.018Z","modified":"2026-11-07T10:47:28.441098908Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-190"],"updated_at":"2026-11-07T11:15:38.581573Z"},{"id":"DEBIAN-CVE-2026-40962","description":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.","status":"published","published":"2026-04-16T02:16:12.227Z","modified":"2026-10-01T03:03:04.642400176Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:54.892385Z"},{"id":"JLSEC-2026-652","title":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common...","description":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to `libavformat/mov.c`.","status":"published","published":"2026-06-26T20:24:16.337Z","modified":"2026-07-25T18:24:44.162715418Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:47:18.573531Z"},{"id":"OESA-2026-2928","title":"ffmpeg security update","description":"FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read in the read_global_param() function (libavcodec/av1dec.c) of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.(CVE-2026-30997)\n\nFFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.(CVE-2026-40962)","status":"published","published":"2026-07-09T11:11:50Z","modified":"2026-08-18T01:21:16.945624027Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3082","title":"ffmpeg security update","description":"FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nA 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)\n\nUnchecked 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 .\n\nThis issue affects FFmpeg: 7.1.\n\nIssue was fixed:  https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a\n\n https://github.com/FFmpeg/FFmpeg/commit/b5b6391d64807578ab872dc58fb8aa621dcfc38a This issue was discovered by: Simcha Kosman(CVE-2025-0518)\n\nA NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.(CVE-2025-10256)\n\nA flaw was found in FFmpeg’s TensorFlow backend within the libavfilter/dnn_backend_tf.c source file. The issue occurs in the dnn_execute_model_tf() function, where a task object is freed multiple times in certain error-handling paths. This redundant memory deallocation can lead to a double-free condition, potentially causing FFmpeg or any application using it to crash when processing TensorFlow-based DNN models. This results in a denial-of-service scenario but does not allow arbitrary code execution under normal conditions.(CVE-2025-12343)\n\nA 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)\n\nA heap buffer overflow in the av_bprint_finalize() function of FFmpeg v8.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted input.(CVE-2026-30999)\n\nFFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.(CVE-2026-40962)\n\nA flaw was found in FFmpeg. A remote attacker could exploit this vulnerability by providing a specially crafted MPEG-PS/VOB media file containing a malicious DVD subtitle stream. This vulnerability is caused by a signed integer overflow in the DVD subtitle parser\u0026apos;s fragment reassembly bounds checks, leading to a heap out-of-bounds write. Successful exploitation can result in a denial of service (DoS) due to an application crash, and potentially lead to arbitrary code execution.(CVE-2026-6385)","status":"published","published":"2026-07-19T11:11:58Z","modified":"2026-08-18T01:21:20.442348918Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3207","title":"ffmpeg security update","description":"FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nInteger overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.(CVE-2025-63757)\n\nFFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.(CVE-2026-40962)","status":"published","published":"2026-08-01T11:12:05Z","modified":"2026-08-18T01:21:25.861651537Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"OESA-2026-3211","title":"ffmpeg security update","description":"FFmpeg is a complete and free Internet live audio and video broadcasting solution for Linux/Unix. It also includes a digital VCR. It can encode in real time in many formats including MPEG1 audio and video, MPEG4, h263, ac3, asf, avi, real, mjpeg, and flash.\r\n\r\nSecurity Fix(es):\n\nInteger overflow vulnerability in the yuv2ya16_X_c_template function in libswscale/output.c in FFmpeg 8.0.(CVE-2025-63757)\n\nFFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.(CVE-2026-40962)","status":"published","published":"2026-08-01T11:12:05Z","modified":"2026-08-18T01:21:25.99410338Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:46.823443Z"},{"id":"RHSA-2026:74089","title":"Red Hat Security Advisory: RHEL AI 3.0 RPM runtime CVE fix - ffmpeg","status":"published","published":"2026-10-01T10:21:19Z","modified":"2026-10-20T10:15:27Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.928316Z"},{"id":"UBUNTU-CVE-2026-40962","description":"FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.","status":"published","published":"2026-04-16T02:16:00Z","modified":"2026-10-17T12:54:54.193636712Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:56:16.686388Z"},{"id":"MGASA-2026-0153","title":"Updated ffmpeg packages fix security vulnerabilities","description":"An out-of-bounds read in the read_global_param() function\n(libavcodec/av1dec.c) of FFmpeg v8.0.1 allows attackers to cause a\nDenial of Service (DoS) via a crafted input. (CVE-2026-30997)\nFFmpeg before 8.1 has an integer overflow and resultant out-of-bounds\nwrite via CENC (Common Encryption) subsample data to libavformat/mov.c.\n(CVE-2026-40962)\n","status":"published","published":"2026-05-26T01:55:28Z","modified":"2026-05-26T02:00:04.314791603Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2026:10767-1","title":"ffmpeg-4-4.4.6-12.1 on GA media","description":"These are all security issues fixed in the ffmpeg-4-4.4.6-12.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-05-13T00:00:00Z","modified":"2026-05-14T08:16:45.843842Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:10768-1","title":"ffmpeg-7-7.1.3-3.1 on GA media","description":"These are all security issues fixed in the ffmpeg-7-7.1.3-3.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-05-13T00:00:00Z","modified":"2026-05-14T08:16:36.799945Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:20726-1","title":"Security update for ffmpeg-4","description":"This update for ffmpeg-4 fixes the following issues:\n\nChanges in ffmpeg-4:\n\n- CVE-2026-40962: Fixed inadequate CENC subsample bounds checks that could lead to an integer overflow (bsc#1262237).\n","status":"published","published":"2026-05-13T17:55:22Z","modified":"2026-05-16T18:26:25.416269Z","updated_at":"2026-11-02T16:58:41.463445Z"},{"id":"openSUSE-SU-2026:21211-1","title":"Security update for ffmpeg-7","description":"This update for ffmpeg-7 fixes the following issues\n\n- CVE-2026-40962: inadequate CENC subsample bounds checks can lead to an integer overflow (bsc#1262237).\n\nChanges for ffmpeg-7:\n\n- Update to version 7.1.4:\n * Codec, format, filter and various other bugfixes.\n * lavc/aarch64: Fix addp overflow in ff_pred16x16_plane_neon_10\n * swscale/output: Fix integer overflow in yuv2ya16_X_c_template()\n * avformat/avformat: clear FFFormatContext packet queue when\n closing a muxer\n","status":"published","published":"2026-07-02T10:09:47Z","modified":"2026-07-03T11:00:08.005526922Z","updated_at":"2026-11-02T16:58:41.885092Z"},{"id":"SUSE-SU-2026:2444-1","title":"Security update for ffmpeg-4","description":"This update for ffmpeg-4 fixes the following issues\n\nUpdate to version 4.4.7:\n\n- CVE-2023-6601: HLS Unsafe File Extension Bypass (bsc#1220545).\n- CVE-2024-35366: FFmpeg n6.1.1 is Integer Overflow. The vulnerability exists in the parse_options function of sbgdec.c\n  within the libavformat module. When parsing certain options, the software does not adequately validate the i\n  (bsc#1234030).\n- CVE-2025-1594: stack-based buffer overflow in function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of\n  the component AAC Encoder (bsc#1237561).\n- CVE-2025-9951: heap-based buffer overflow in jpeg2000dec (bsc#1249393).\n- CVE-2025-10256: NULL pointer dereference in Firequalizer filter (bsc#1249431).\n- CVE-2025-63757: accumulation of filtered pixel values can lead to an integer overflow (bsc#1255392).\n- CVE-2026-30997: Denial of Service via out-of-bounds read (bsc#1262047).\n- CVE-2026-40962: inadequate CENC subsample bounds checks can lead to an integer overflow (bsc#1262237).\n","status":"published","published":"2026-06-18T08:51:46Z","modified":"2026-06-19T08:15:05.666357241Z","updated_at":"2026-11-02T15:54:04.519245Z"},{"id":"SUSE-SU-2026:2445-1","title":"Security update for ffmpeg-4","description":"This update for ffmpeg-4 fixes the following issues\n\nUpdate to version 4.4.7:\n\n- CVE-2023-6601: HLS Unsafe File Extension Bypass (bsc#1220545).\n- CVE-2024-35366: FFmpeg n6.1.1 is Integer Overflow. The vulnerability exists in the parse_options function of sbgdec.c\n  within the libavformat module. When parsing certain options, the software does not adequately validate the i\n  (bsc#1234030).\n- CVE-2025-1594: stack-based buffer overflow in function ff_aac_search_for_tns of the file libavcodec/aacenc_tns.c of\n  the component AAC Encoder (bsc#1237561).\n- CVE-2025-9951: heap-based buffer overflow in jpeg2000dec (bsc#1249393).\n- CVE-2025-10256: NULL pointer dereference in Firequalizer filter (bsc#1249431).\n- CVE-2025-63757: accumulation of filtered pixel values can lead to an integer overflow (bsc#1255392).\n- CVE-2026-30997: Denial of Service via out-of-bounds read (bsc#1262047).\n- CVE-2026-40962: inadequate CENC subsample bounds checks can lead to an integer overflow (bsc#1262237).\n","status":"published","published":"2026-06-18T08:52:03Z","modified":"2026-06-19T08:15:05.714693843Z","updated_at":"2026-11-02T15:54:04.519245Z"},{"id":"USN-8469-1","title":"ffmpeg vulnerabilities","description":"Jiasheng Jiang discovered that FFmpeg incorrectly handled memory in\ncertain error-handling paths of its TensorFlow DNN backend. An attacker\ncould possibly use this issue to cause a denial of service. This issue only\naffected Ubuntu 24.04 LTS. (CVE-2025-12343)\n\nQuang Luong discovered that FFmpeg incorrectly handled certain subsample\ndata. An attacker could possibly use this issue to cause a denial of\nservice or possibly execute arbitrary code. (CVE-2026-40962)","status":"published","published":"2026-06-24T16:14:42Z","modified":"2026-06-25T00:29:23.004046605Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}