---
cve: "CVE-2023-4863"
severity: "HIGH"
cvss: 8.8
epss: "99.7%"
vendor: "Google"
kev: true
exploited: true
published: "2023-09-12 15:15:24"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T07:49:05+02:00"
---

# CVE-2023-4863

> 8.8 HIGH · ⚠️ CISA KEV (1101 Tage) · 🔓 Exploited · 🧪 PoC

## Beschreibung

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)

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Erforderlich | good |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- ca332209cb5567c9b249c86788cb2dbf8847e760 (Commit)
- 902bc9190331343b2017211debcec8d2ab87e17a (Commit)

## Referenzen

- <https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html>
- <https://crbug.com/1479274>
- <https://en.bandisoft.com/honeyview/history/>
- <https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863/>
- <https://www.mozilla.org/en-US/security/advisories/mfsa2023-40/>
- <https://github.com/webmproject/libwebp/commit/902bc9190331343b2017211debcec8d2ab87e17a>
- <https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-4863>
- <https://security-tracker.debian.org/tracker/CVE-2023-4863>
- <https://bugzilla.suse.com/show_bug.cgi?id=1215231>
- <https://news.ycombinator.com/item?id=37478403>
- <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>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OZDGWWMJREPAGKWCJKSCM4WYLANSKIFX/>
- <https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FYYKLG6CRGEDTNRBSU26EEWAO6D6U645/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-4863) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_