CVE-2026-66041
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write vulnerability in the vf_quirc filter. An attacker can supply a crafted PGS/SUP subtitle file with mismatched frame dimensions, causing data to be copied beyond the allocated buffer, leading to heap corruption and potential code execution.
Risk Assessment
Organizations using FFmpeg to process subtitle files are at risk of memory corruption and potential code execution via a crafted file.
Recommendation
Update FFmpeg to a version containing commit 4da9812 or later.
Other vulnerabilities in FFmpeg
See all- CVE-2017-15672High
The read_header function in libavcodec/ffv1dec.c in FFmpeg 2.4 and 3.3.4 and possibly earlier allows remote attackers to have unspecified impact via a crafted MP4 file, which triggers an out-of-bounds read.
- CVE-2017-14767High
The sdp_parse_fmtp_config_h264 function in libavformat/rtpdec_h264.c in FFmpeg before version 3.3.4 mishandles empty sprop-parameter-sets values, allowing remote attackers to cause a denial of service (heap buffer overflow) or possibly have unspecified other impact via a crafted sdp file.
- CVE-2017-14225High
The av_color_primaries_name function in libavutil/pixdesc.c in FFmpeg 3.3.3 may return a NULL pointer depending on a value contained in a file, leading to a NULL pointer dereference in the avcodec_string function in libavcodec/utils.c.
- CVE-2012-2805High
Unspecified vulnerability in FFMPEG 0.10 allows remote attackers to cause a denial of service.
- CVE-2017-11719High
The dnxhd_decode_header function in libavcodec/dnxhddec.c in FFmpeg versions 3.0 through 3.3.2 allows remote attackers to cause a denial of service (out-of-array access) or possibly have unspecified other impact via a crafted DNxHD file.
- CVE-2017-11665High
The ff_amf_get_field_value function in libavformat/rtmppkt.c in FFmpeg 3.3.2 allows remote RTMP servers to cause a denial of service via a crafted stream, leading to segmentation violation and application crash.
- CVE-2017-9996High
The cdxl_decode_frame function in libavcodec/cdxl.c in FFmpeg before versions 2.8.12, 3.0.8, 3.1.8, 3.2.5, and 3.3.1 does not exclude the CHUNKY format, allowing remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.
- CVE-2017-9995High
In libavcodec/scpr.c in FFmpeg version 3.3 and earlier, before version 3.3.1, height and width data is not properly validated, allowing remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.
- CVE-2017-9993High
FFmpeg versions before 2.8.12, 3.0.x and 3.1.x before 3.1.9, 3.2.x before 3.2.6, and 3.3.x before 3.3.2 do not properly restrict HTTP Live Streaming filename extensions and demuxer names, allowing attackers to read arbitrary files via crafted playlist data.
- CVE-2017-9992High
A heap-based buffer overflow in the decode_dds1 function in libavcodec/dfa.c in FFmpeg before 2.8.12, 3.0.x before 3.0.8, 3.1.x before 3.1.8, 3.2.x before 3.2.5, and 3.3.x before 3.3.1 allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted file.
Original NVD description (English source)
FFmpeg 7.0 through 8.1.2, fixed in commit 4da9812, contains a heap out-of-bounds write vulnerability in the vf_quirc filter that allows an attacker to corrupt heap memory by supplying a crafted PGS/SUP subtitle file with mismatched frame dimensions. Attackers can provide a subtitle file whose second presentation has larger dimensions than its first, causing av_image_copy_plane() to copy data exceeding the initial allocation size into the undersized libquirc grayscale image buffer, resulting in heap corruption and process crash with potential for code execution.