{"id":"CVE-2023-5217","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-5217","generatedAt":"2026-10-31T10:23:41.829Z","title":"Google Chromium libvpx Heap Buffer Overflow Vulnerability","description":"Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)","published":"2023-09-28T16:15:11.000Z","lastModified":"2026-06-17T06:48:06.000Z","status":"Analyzed","sourceIdentifier":"chrome-cve-admin@google.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["webmproject/libvpx","microsoft/edge","microsoft/edge chromium","mozilla/firefox","mozilla/thunderbird","fedoraproject/fedora","debian/debian linux","apple/ipados","apple/iphone os","google/chrome","redhat/enterprise linux"],"epss":{"score":0.49013,"percentile":0.98879,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2023-10-02","dueDate":"2023-10-23","knownRansomwareCampaignUse":"Unknown","notes":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.\nhttps://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_27.html; https://nvd.nist.gov/vuln/detail/CVE-2023-5217"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 23 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://seclists.org/fulldisclosure/2023/Oct/12","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://seclists.org/fulldisclosure/2023/Oct/16","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/5","tags":["Mailing List","Patch","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/6","tags":["Mailing List","Patch","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/1","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/11","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/12","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/14","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/2","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/7","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/9","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/30/1","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/30/2","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/30/3","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/30/4","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/30/5","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/01/1","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/01/2","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/01/5","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/02/6","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/10/03/11","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://arstechnica.com/security/2023/09/new-0-day-in-chrome-and-firefox-is-likely-to-plague-other-software/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2241191","tags":["Issue Tracking","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_27.html","tags":["Vendor Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://crbug.com/1486441","tags":["Exploit","Issue Tracking"],"source":"chrome-cve-admin@google.com"},{"url":"https://github.com/webmproject/libvpx/commit/3fbd1dca6a4d2dad332a2110d646e4ffef36d590","tags":["Patch"],"source":"chrome-cve-admin@google.com"},{"url":"https://github.com/webmproject/libvpx/commit/af6dedd715f4307669366944cca6e0417b290282","tags":["Patch"],"source":"chrome-cve-admin@google.com"},{"url":"https://github.com/webmproject/libvpx/releases/tag/v1.13.1","tags":["Release Notes"],"source":"chrome-cve-admin@google.com"},{"url":"https://github.com/webmproject/libvpx/tags","tags":["Product"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00038.html","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00001.html","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00015.html","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4MFWDFJSSIFKWKNOCTQCFUNZWAXUCSS4/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/55YVCZNAVY3Y5E4DWPWMX2SPKZ2E5SOV/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AY642Z6JZODQJE7Z62CFREVUHEGCXGPD/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BCVSHVX2RFBU3RMCUFSATVQEJUFD4Q63/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CWEJYS5NC7KVFYU3OAMPKQDYN6JQGVK6/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TE7F54W5O5RS4ZMAAC7YK3CZWQXIDSKB/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://pastebin.com/TdkC4pDv","tags":["Not Applicable"],"source":"chrome-cve-admin@google.com"},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-5217","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://security.gentoo.org/glsa/202310-04","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://security.gentoo.org/glsa/202401-34","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://stackdiary.com/google-discloses-a-webm-vp8-bug-tracked-as-cve-2023-5217/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://support.apple.com/kb/HT213961","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://support.apple.com/kb/HT213972","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://twitter.com/maddiestone/status/1707163313711497266","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.debian.org/security/2023/dsa-5508","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.debian.org/security/2023/dsa-5509","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.debian.org/security/2023/dsa-5510","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2023-44/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.openwall.com/lists/oss-security/2023/09/28/5","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://seclists.org/fulldisclosure/2023/Oct/12","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://seclists.org/fulldisclosure/2023/Oct/16","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/5","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/6","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/1","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/11","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/12","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/29/14","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-5217","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}