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4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2021-05-25T17:40:59Z","modified":"2024-08-04T14:22:25.155Z","updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2020-13233","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2021-05-25T17:40:59Z","modified":"2024-08-04T14:22:25Z","updated_at":"2026-11-03T03:07:24.233243Z"}],"ghsa":[{"id":"GHSA-g8q8-j3hg-2pxm","title":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote...","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2022-05-24T19:03:10Z","modified":"2023-01-29T05:06:47Z","cwes":["CWE-369"],"updated_at":"2026-11-02T14:46:05.929333Z"}],"nvd":[{"id":"CVE-2020-20446","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2021-05-25T18:15:07.953Z","modified":"2026-06-17T03:03:00.137Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-369"],"updated_at":"2026-11-02T14:06:43.288951Z"}],"osv":[{"id":"ALPINE-CVE-2020-20446","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2021-05-25T18:15:07.953Z","modified":"2026-11-03T06:32:24.563444317Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T07:17:57.723967Z"},{"id":"CVE-2020-20446","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2021-05-25T18:15:07.953Z","modified":"2026-11-07T10:47:06.148390055Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-07T11:15:38.581573Z"},{"id":"DEBIAN-CVE-2020-20446","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2021-05-25T18:15:07.953Z","modified":"2026-10-26T12:02:29.614162635Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:33.384087Z"},{"id":"OESA-2026-2663","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\nFFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/lpc.h, which allows a remote malicious user to cause a Denial of Service.(CVE-2020-20445)\n\nFFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.(CVE-2020-20446)\n\nFFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service(CVE-2020-20453)\n\nBuffer Overflow vulnerability in FFmpeg 4.2 in mov_write_video_tag due to the out of bounds in libavformat/movenc.c, which could let a remote malicious user obtain sensitive information, cause a Denial of Service, or execute arbitrary code.(CVE-2020-22015)\n\nA heap-based Buffer Overflow vulnerability exits in FFmpeg 4.2 in deflate16 at libavfilter/vf_neighbor.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22027)\n\nA heap-based Buffer Overflow vulnerability exists FFmpeg 4.2 at libavfilter/vf_floodfill.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22034)\n\nWhen calculating the content path in handling of MPEG-DASH manifests, there\u0026apos;s an out-of-bounds NUL-byte write one byte past the end of the buffer.When we call xmlNodeGetContent below [0], it returns a buffer precisely allocated to match the string length, using strdup internally. If this buffer is not an empty string, it is assigned to root_url at [1].If the last (non-NUL) byte in this buffer is not \u0026apos;/\u0026apos; then we append \u0026apos;/\u0026apos; in-place at [2]. This will write two bytes into the buffer, starting at the last valid byte in the buffer, writing the NUL byte beyond the end of the allocated buffer.\nWe recommend upgrading to version 8.0 or beyond.(CVE-2025-59728)","status":"published","published":"2026-06-12T11:11:35Z","modified":"2026-08-18T01:20:04.940804642Z","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":"2026-11-02T15:52:46.449097Z"},{"id":"OESA-2026-2664","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\nFFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/lpc.h, which allows a remote malicious user to cause a Denial of Service.(CVE-2020-20445)\n\nFFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.(CVE-2020-20446)\n\nFFmpeg 4.2 is affected by null pointer dereference passed as argument to libavformat/aviobuf.c, which could cause a Denial of Service.(CVE-2020-20450)\n\nFFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious user to cause a Denial of Service(CVE-2020-20453)\n\nBuffer Overflow vulnerability in FFmpeg 4.2 in mov_write_video_tag due to the out of bounds in libavformat/movenc.c, which could let a remote malicious user obtain sensitive information, cause a Denial of Service, or execute arbitrary code.(CVE-2020-22015)\n\nA heap-based Buffer Overflow vulnerability exists in FFmpeg 4.2 in filter_frame at libavfilter/vf_fieldorder.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22022)\n\nA heap-based Buffer Overflow vulnerability exits in FFmpeg 4.2 in deflate16 at libavfilter/vf_neighbor.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22027)\n\nA heap-based Buffer Overflow vulnerability exists FFmpeg 4.2 at libavfilter/vf_floodfill.c, which might lead to memory corruption and other potential consequences.(CVE-2020-22034)\n\nWhen calculating the content path in handling of MPEG-DASH manifests, there\u0026apos;s an out-of-bounds NUL-byte write one byte past the end of the buffer.When we call xmlNodeGetContent below [0], it returns a buffer precisely allocated to match the string length, using strdup internally. If this buffer is not an empty string, it is assigned to root_url at [1].If the last (non-NUL) byte in this buffer is not \u0026apos;/\u0026apos; then we append \u0026apos;/\u0026apos; in-place at [2]. This will write two bytes into the buffer, starting at the last valid byte in the buffer, writing the NUL byte beyond the end of the allocated buffer.\nWe recommend upgrading to version 8.0 or beyond.(CVE-2025-59728)","status":"published","published":"2026-06-12T11:11:36Z","modified":"2026-08-18T01:20:04.906595148Z","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":"2026-11-02T15:52:46.449097Z"},{"id":"UBUNTU-CVE-2020-20446","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious user to cause a Denial of Service.","status":"published","published":"2021-05-25T18:15:00Z","modified":"2026-04-22T12:32:51.440272Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:23.905183Z"},{"id":"DLA-2818-1","title":"ffmpeg - security update","status":"published","published":"2021-11-13T00:00:00Z","modified":"2026-03-09T01:19:56.785991Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DSA-4990-1","title":"ffmpeg - security update","status":"published","published":"2021-10-19T00:00:00Z","modified":"2026-03-09T02:08:40.919915Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"DSA-4998-1","title":"ffmpeg - security update","status":"published","published":"2021-10-31T00:00:00Z","modified":"2026-03-09T02:09:24.794388Z","updated_at":"2026-11-02T15:46:17.543497Z"},{"id":"MGASA-2021-0495","title":"Updated ffmpeg packages fix security vulnerability","description":"FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c,\nwhich allows a remote malicious user to cause a Denial of Service.\n(CVE-2020-20446)\n\nFFmpeg 4.2 is affected by null pointer dereference passed as argument to\nlibavformat/aviobuf.c, which could cause a Denial of Service.\n(CVE-2020-20450)\n\nFFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder,\nwhich allows a remote malicious user to cause a Denial of Service.\n(CVE-2020-20453)\n\nBuffer Overflow vulnerability exists in FFmpeg 4.1 via apng_do_inverse_blend\nin libavcodec/pngenc.c, which could let a remote malicious user cause a\nDenial of Service. (CVE-2020-21041)\n\nBuffer Overflow vulnerability in FFmpeg 4.2 in mov_write_video_tag due to\nthe out of bounds in libavformat/movenc.c, which could let a remote\nmalicious user obtain sensitive information, cause a Denial of Service, or\nexecute arbitrary code. (CVE-2020-22015)\n\nBuffer Overflow vulnerability in FFmpeg 4.2 at convolution_y_10bit in\nlibavfilter/vf_vmafmotion.c, which could let a remote malicious user cause\na Denial of Service. (CVE-2020-22019)\n\nBuffer Overflow vulnerability in FFmpeg 4.2 at filter_edges function in\nlibavfilter/vf_yadif.c, which could let a remote malicious user cause a\nDenial of Service. (CVE-2020-22021)\n\nA heap-based Buffer Overflow Vulnerability exists FFmpeg 4.2 at\nlibavfilter/vf_vmafmotion.c in convolution_y_8bit, which could let a remote\nmalicious user cause a Denial of Service. (CVE-2020-22033)\n\nA Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak\nin avcodec_alloc_context3 at options.c. (CVE-2020-22037)\n\nA Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak\nin the ff_v4l2_m2m_create_context function in v4l2_m2m.c. (CVE-2020-22038)\n\nA Denial of Service vulnerability exists in FFmpeg 4.2 due to a memory leak\nis affected by: memory leak in the link_filter_inouts function in\nlibavfilter/graphparser.c. (CVE-2020-22042)\n\nlibavcodec/dnxhddec.c in FFmpeg 4.4 does not check the return value of the\ninit_vlc function, a similar issue to CVE-2013-0868. (CVE-2021-38114)\n\nadts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check\nthe init_get_bits return value, which is a necessary step because the second\nargument to init_get_bits can be crafted. (CVE-2021-38171)\n\nFFmpeg version (git commit de8e6e67e7523e48bb27ac224a0b446df05e1640) suffers\nfrom a an assertion failure at src/libavutil/mathematics.c. (CVE-2021-38291)\n","status":"published","published":"2021-10-29T19:32:22Z","modified":"2026-04-16T04:43:32.812562357Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"USN-5167-1","title":"ffmpeg vulnerabilities","description":"It was discovered that FFmpeg did not properly verify certain input when\nprocessing video and audio files. An attacker could possibly use this to send\nspecially crafted input to the application, force a division by zero, and\ncause a denial of service (application crash). (CVE-2020-20445, CVE-2020-20446,\nCVE-2020-20453, CVE-2020-20892)\n\nIt was discovered that FFmpeg did not properly perform certain bit shift and\nmemory operations. An attacker could possibly use this issue to expose\nsensitive information. (CVE-2020-20902)\n\nIt was discovered that FFmpeg did not properly perform memory management\noperations in various of its functions. An attacker could possibly use this\nissue to send specially crafted input to the application and cause a denial of\nservice (application crash) or execute arbitrary code. (CVE-2020-21041,\nCVE-2020-20451, CVE-2020-21688, CVE-2020-21697, CVE-2020-22020,\nCVE-2020-22021, CVE-2020-22022, CVE-2020-22025, CVE-2020-22031,\nCVE-2020-22032, CVE-2020-22037, CVE-2020-22040, CVE-2020-22041,\nCVE-2020-22042, CVE-2020-22044)\n\nIt was discovered that FFmpeg did not properly perform memory management\noperations in various of its functions. An attacker could possibly use this\nissue to send specially crafted input to the application and cause a denial of\nservice (application crash) or execute arbitrary code. (CVE-2020-22016,\nCVE-2020-22046, CVE-2020-22049, CVE-2020-22054)\n\nIt was discovered that FFmpeg did not properly perform memory management\noperations in various of its functions. An attacker could possibly use this\nissue to send specially crafted input to the application and cause a denial of\nservice (application crash) or execute arbitrary code. (CVE-2020-35965)\n\nIt was discovered that FFmpeg did not properly handle data assigned to the tty\ndemuxer. An attacker could possibly use this issue to send specially crafted\ninput to the application and expose sensitive information. (CVE-2021-3566)\n\nIt was discovered that FFmpeg did not perform checks on function return\nvalues when encoding and formatting input video and audio files. An attacker\ncould possibly use this issue to cause a denial of service (application crash)\nor execute arbitrary code. (CVE-2021-38114, CVE-2021-38171)\n\nIt was discovered that FFmpeg did not properly sanitize function returned data\nwhen calculating frame duration values. An attacker could possibly use this\nissue to cause an assertion failure and then cause a denial of service\n(application crash). (CVE-2021-38291)\n","status":"published","published":"2022-06-13T16:13:57Z","modified":"2026-06-25T13:30:52.229225755Z","updated_at":"2026-11-02T16:58:15.683829Z"},{"id":"USN-5472-1","title":"ffmpeg vulnerabilities","description":"It was discovered that FFmpeg would attempt to divide by zero when using Linear\nPredictive Coding (LPC) or AAC codecs. An attacker could possibly use this\nissue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS and Ubuntu 21.10. (CVE-2020-20445, CVE-2020-20446,\nCVE-2020-20453)\n\nIt was discovered that FFmpeg incorrectly handled certain input. An attacker\ncould possibly use this issue to cause a denial of service. This issue only\naffected Ubuntu 20.04 LTS. (CVE-2020-20450)\n\nIt was discovered that FFmpeg incorrectly handled file conversion to APNG\nformat. An attacker could possibly use this issue to cause a denial of\nservice. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2020-21041)\n\nIt was discovered that FFmpeg incorrectly handled remuxing RTP-hint tracks.\nA remote attacker could possibly use this issue to execute arbitrary code.\nThis issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2020-21688)\n\nIt was discovered that FFmpeg incorrectly handled certain specially crafted\nAVI files. An attacker could possibly use this issue to cause a denial of\nservice. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2020-21697)\n\nIt was discovered that FFmpeg incorrectly handled writing MOV video tags. An\nattacker could possibly use this issue to cause a denial of service, obtain\nsensitive information or execute arbitrary code. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 21.10. (CVE-2020-22015)\n\nIt was discovered that FFmpeg incorrectly handled writing MOV files. An\nattacker could possibly use this issue to cause a denial of service or other\nunspecified impact. This issue affected only Ubuntu 18.04 LTS. (CVE-2020-22016)\n\nIt was discovered that FFmpeg incorrectly handled memory when using certain\nfilters. An attacker could possibly use this issue to cause a denial of service\nor other unspecified impact. This issue only affected Ubuntu 18.04 LTS and\nUbuntu 20.04 LTS. (CVE-2020-22017, CVE-2020-22020, CVE-2020-22022,\nCVE-2020-22023, CVE-2022-22025, CVE-2020-22026, CVE-2020-22028, CVE-2020-22031,\nCVE-2020-22032, CVE-2020-22034, CVE-2020-22036, CVE-2020-22042)\n\nIt was discovered that FFmpeg incorrectly handled memory when using certain\nfilters. An attacker could possibly use this issue to cause a denial of service\nor other unspecified impact. This issue only affected Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS and Ubuntu 21.10. (CVE-2020-22019, CVE-2020-22021,\nCVE-2020-22033)\n\nIt was discovered that FFmpeg incorrectly handled memory when using certain\nfilters. An attacker could possibly use this issue to cause a denial of service\nor other unspecified impact. This issue only affected Ubuntu 21.10.\n(CVE-2020-22027, CVE-2020-22029, CVE-2020-22030, CVE-2020-22035)\n\nIt was discovered that FFmpeg incorrectly handled certain specially crafted\nJPEG files. An attacker could possibly use this issue to obtain sensitive\ninformation. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and\nUbuntu 21.10. (CVE-2020-22037)\n\nIt was discovered that FFmpeg incorrectly performed calculations in EXR codec.\nAn attacker could possibly use this issue to cause a denial of service. This\nissue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-35965)\n\nIt was discovered that FFmpeg did not verify return values of functions\ninit_vlc and init_get_bits. An attacker could possibly use this issue to cause\na denial of service or other unspecified impact. This issue only affected\nUbuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 21.10. (CVE-2021-38114,\nCVE-2021-38171)\n\nIt was discovered that FFmpeg incorrectly handled certain specially crafted\nfiles. An attacker could possibly use this issue to cause a denial of service.\nThis issue only affected Ubuntu 21.10 and Ubuntu 22.04 LTS. (CVE-2022-1475)\n","status":"published","published":"2022-06-08T11:54:47Z","modified":"2026-04-27T16:19:02.02518084Z","updated_at":"2026-11-02T16:58:16.20937Z"}]}}