CVE-2023-4863: Google Chromium WebP Heap-Based Buffer Overflow Vulnerability
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 Sep 12, 2023 · Updated Jun 17, 2026
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Advisory details
From the National Vulnerability Database. This product uses the NVD API but is not endorsed or certified by the NVD.
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)
References
- https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/
- https://blog.isosceles.com/the-webp-0day/
- https://bugzilla.suse.com/show_bug.cgi?id=1215231
- https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html
- https://crbug.com/1479274
- https://en.bandisoft.com/honeyview/history/
- https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a
- https://github.com/webmproject/libwebp/releases/tag/v1.3.2
- https://lists.debian.org/debian-lts-announce/2023/09/msg00015.html
- https://lists.debian.org/debian-lts-announce/2023/09/msg00016.html
- https://lists.debian.org/debian-lts-announce/2023/09/msg00017.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I/
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863
- https://news.ycombinator.com/item?id=37478403
- https://security-tracker.debian.org/tracker/CVE-2023-4863
- https://security.gentoo.org/glsa/202309-05
- https://security.gentoo.org/glsa/202401-10
- https://security.netapp.com/advisory/ntap-20230929-0011/
- https://sethmlarson.dev/security-developer-in-residence-weekly-report-16
- https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863/
- https://www.bentley.com/advisories/be-2023-0001/
- https://www.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks/
- https://www.debian.org/security/2023/dsa-5496
- https://www.debian.org/security/2023/dsa-5497
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology
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