{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-125255 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-125255 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-125255 is a medium-severity vulnerability in FFmpeg, published on 9 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-125255 and fix it if it is affected.\n\nWhat it is: CVE-2026-125255 is a medium-severity vulnerability in FFmpeg, published on 9 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-125255 in the wild and no public exploit code.\n\nAffected product: FFmpeg. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-125255/ (Markdown: https://insights.sbomify.com/CVE-2026-125255/index.md)","id":"CVE-2026-125255","markdown":"https://insights.sbomify.com/CVE-2026-125255/index.md","name":"CVE-2026-125255","record":{"aliases":["GHSA-phr3-qwpx-974c","UBUNTU-CVE-2026-125255"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":5.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"FFmpeg through 9.0.2 contains a use after free vulnerability in libavcodec/mjpegdec.c that allows attackers to trigger freed buffer reads by sending a SOF marker without a preceding SOI. Attackers can supply crafted MJPEG streams causing ff_mjpeg_decode_sof() to pass a stale raw_image_buffer pointer to hwaccel decoders like NVDEC, crashing applications or leaking heap contents.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"FFmpeg through 9.0.2 Use-After-Free in MJPEG Hardware-Accelerated Decoding","id":"CVE-2026-125255","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"FFmpeg through 9.0.2 Heap Buffer Overflow via RISC-V Vector diff_bytes Routine","id":"CVE-2026-125256"},"nickname":null,"packages":[],"prev":{"headline":"FFmpeg through 9.0.2 Division by Zero via VVC ff_vvc_slice_rpl()","id":"CVE-2026-125254"},"products":["FFmpeg"],"published":"2026-11-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-11-10","vendors":["FFmpeg"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-125255/"}