{"id":"CVE-2023-4863","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-4863","generatedAt":"2026-10-28T02:13:34.327Z","title":"Google Chromium WebP Heap-Based Buffer Overflow Vulnerability","description":"Heap buffer overflow in libwebp in Google Chrome prior to 116.0.5845.187 and libwebp 1.3.2 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)","published":"2023-09-12T15:15:24.000Z","lastModified":"2026-06-17T06:38:47.000Z","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":["google/chrome","fedoraproject/fedora","debian/debian linux","mozilla/firefox","mozilla/thunderbird","microsoft/edge chromium","microsoft/teams","microsoft/webp image extension","webmproject/libwebp","netapp/active iq unified manager","bentley/seequent leapfrog","bandisoft/honeyview"],"epss":{"score":0.99979,"percentile":0.9998,"date":"2026-10-26","history":[]},"kev":{"listed":true,"dateAdded":"2023-09-13","dueDate":"2023-10-04","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_11.html?m=1; https://nvd.nist.gov/vuln/detail/CVE-2023-4863"},"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 4 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2023/09/21/4","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/1","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/3","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/4","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/5","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/6","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/7","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/8","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/26/1","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/26/7","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/1","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/2","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/4","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://blog.isosceles.com/the-webp-0day/","tags":["Exploit","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1215231","tags":["Issue Tracking","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html","tags":["Vendor Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://crbug.com/1479274","tags":["Issue Tracking","Vendor Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://en.bandisoft.com/honeyview/history/","tags":["Release Notes"],"source":"chrome-cve-admin@google.com"},{"url":"https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a","tags":["Patch"],"source":"chrome-cve-admin@google.com"},{"url":"https://github.com/webmproject/libwebp/releases/tag/v1.3.2","tags":["Release Notes"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00015.html","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00016.html","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00017.html","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX/","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB/","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://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863","tags":["Patch","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://news.ycombinator.com/item?id=37478403","tags":["Exploit","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-4863","tags":["Issue Tracking","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://security.gentoo.org/glsa/202309-05","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://security.gentoo.org/glsa/202401-10","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://security.netapp.com/advisory/ntap-20230929-0011/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://sethmlarson.dev/security-developer-in-residence-weekly-report-16","tags":["Exploit"],"source":"chrome-cve-admin@google.com"},{"url":"https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863/","tags":["Exploit","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.bentley.com/advisories/be-2023-0001/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.debian.org/security/2023/dsa-5496","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.debian.org/security/2023/dsa-5497","tags":["Mailing List"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.debian.org/security/2023/dsa-5498","tags":["Mailing List","Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2023-40/","tags":["Third Party Advisory"],"source":"chrome-cve-admin@google.com"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/21/4","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/1","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/3","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/4","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/5","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/6","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/7","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/22/8","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/26/1","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/26/7","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/1","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/2","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2023/09/28/4","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://blog.isosceles.com/the-webp-0day/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-4863","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."}