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CVE-2023-4863
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…
- 8.8HighCVSS base score
- 100.0%Exploitation in 30 daysEPSS · top 0.1% of all CVEs
- YesKnown exploitedin CISA's KEV since 13 Sept 2023
- YesPublic exploitsa reference or SSVC says so
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)
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Google Chromium WebP Heap-Based Buffer Overflow Vulnerability.
- Added
- 13 Sept 2023
- Fix due (US federal)
- 4 Oct 2023
- Used by ransomware
- Not known
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 13 Sept 2023.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By Chrome
- 3 days later
· 3 days later
Published
- 1 day later
· 1 day later
Added to CISA KEV
Known exploited in the wild
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 100.0% · top 0.1% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
Affected packages
Affected packages13
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/chai2010/webpGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- NuGetSkiaSharpGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- NuGetmagick.net-q16-anycpuGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- NuGetmagick.net-q16-hdri-anycpuGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- NuGetmagick.net-q16-x64GHSA-j7hp-h8jx-5ppr (opens in a new tab)
- NuGetmagick.net-q8-anycpuGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- NuGetmagick.net-q8-openmp-x64GHSA-j7hp-h8jx-5ppr (opens in a new tab)
- NuGetmagick.net-q8-x64GHSA-j7hp-h8jx-5ppr (opens in a new tab)
- PyPIPillowGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- crates.iolibwebp-sysGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- crates.iolibwebp-sys2GHSA-j7hp-h8jx-5ppr (opens in a new tab)
- crates.iowebpGHSA-j7hp-h8jx-5ppr (opens in a new tab)
- npmelectronGHSA-j7hp-h8jx-5ppr (opens in a new tab)
References
References47
- https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html (opens in a new tab)x_transferred
- https://crbug.com/1479274 (opens in a new tab)x_transferred
- https://en.bandisoft.com/honeyview/history/ (opens in a new tab)x_transferred
- https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863/ (opens in a new tab)x_transferred
- https://www.mozilla.org/en-US/security/advisories/mfsa2023-40/ (opens in a new tab)x_transferred
- https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a (opens in a new tab)x_transferred
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863 (opens in a new tab)x_transferred
- https://security-tracker.debian.org/tracker/CVE-2023-4863 (opens in a new tab)x_transferred
- https://bugzilla.suse.com/show_bug.cgi?id=1215231 (opens in a new tab)x_transferred
- https://news.ycombinator.com/item?id=37478403 (opens in a new tab)x_transferred
- https://www.bleepingcomputer.com/news/google/google-fixes-another-chrome-zero-day-bug-exploited-in-attacks/ (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5496 (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5497 (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/PYZV7TMKF4QHZ54SFJX54BDN52VHGGCX/ (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/09/msg00015.html (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WHOLML7N2G5KCAZXFWC5IDFFHSQS5SDB/ (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5498 (opens in a new tab)x_transferred
- https://security.gentoo.org/glsa/202309-05 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/09/msg00016.html (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/6T655QF7CQ3DYAMPFV7IECQYGDEUIVVT/ (opens in a new tab)x_transferred
- https://adamcaudill.com/2023/09/14/whose-cve-is-it-anyway/ (opens in a new tab)x_transferred
- https://github.com/webmproject/libwebp/releases/tag/v1.3.2 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/09/msg00017.html (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/KUQ7CTX3W372X3UY56VVNAHCH6H2F4X3/ (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/21/4 (opens in a new tab)x_transferred
- https://blog.isosceles.com/the-webp-0day/ (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/22/1 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/22/3 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/22/4 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/22/5 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/22/8 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/22/7 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/22/6 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/26/1 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/26/7 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/28/1 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/28/2 (opens in a new tab)x_transferred
- http://www.openwall.com/lists/oss-security/2023/09/28/4 (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20230929-0011/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WTRUIS3564P7ZLM2S2IH4Y4KZ327LI4I/ (opens in a new tab)x_transferred
- https://sethmlarson.dev/security-developer-in-residence-weekly-report-16 (opens in a new tab)x_transferred
- https://www.bentley.com/advisories/be-2023-0001/ (opens in a new tab)x_transferred
- https://security.gentoo.org/glsa/202401-10 (opens in a new tab)x_transferred
- https://www.vicarius.io/vsociety/posts/zero-day-webp-vulnerability-cve-2023-4863 (opens in a new tab)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4863 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-2533 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-j7hp-h8jx-5ppr (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-4863)Record last updated .