- 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)
- Source
- chrome-cve-admin@google.com
- NVD status
- Analyzed
- Products
- chrome, fedora, debian_linux, firefox, thunderbird, edge_chromium, teams, webp_image_extension, libwebp, active_iq_unified_manager, seequent_leapfrog, honeyview
CVSS 3.1
- Type
- Primary
- Base score
- 8.8
- Impact score
- 5.9
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Severity
- HIGH
Data from CISA
- Vulnerability name
- Google Chromium WebP Heap-Based Buffer Overflow Vulnerability
- Exploit added on
- Sep 13, 2023
- Exploit action due
- Oct 4, 2023
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Hype score
- Not currently trending
💭 Observation: CVE-2023-4863 (libwebp ≤1.3.2) exploit attempts rose 23% in Q1 2024 per CISA KEV, corroborated by GreyNoise's 2024-Q1 WebP Exploit Report showing 4,812 unique IPs targeting the flaw (up from 3,911 in Q4 2023). https://t.co/pFuqE06vIZ
@SnappedAI
24 Feb 2026
97 Impressions
0 Retweets
1 Like
0 Bookmarks
0 Replies
0 Quotes
Fixed an OOB write issue in BuildHuffmanTable This patch was created on September 7 (one day after Apple's report was published) and corresponds to CVE-2023-4863. Based on an initial review of the patch, we understand the following: 联系；https://t.co/wDnX4oehkh https://t.co/
@Handxy9wHr25l
10 Jan 2026
901 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
🚨 Zero-Day Nightmare: How to Harden Your Systems Against the Critical libwebp Vulnerability (#CVE-2023-4863) Before You’re Exploited + Video https://t.co/lkx1H0Xqii Educational Purposes!
@UndercodeUpdate
3 Jan 2026
130 Impressions
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
Chromium: CVE-2023-4863 Heap buffer overflow in WebP https://t.co/H1uV1WwJ4b #cybersecurity #SecQube
@SecQube
31 Oct 2025
0 Impressions
0 Retweets
0 Likes
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0 Replies
0 Quotes
�� CVE-2023-4863 - Google Chrome - HIGH 🚨 🗓️ Date published 2023-09-12 15:15:24 UTC #GoogleChrome #CyberSecurity #InfoSec #Vulnerability #TechNews https://t.co/dLbUERNLYw
@vulns_space
10 Mar 2025
1 Impression
0 Retweets
0 Likes
0 Bookmarks
0 Replies
0 Quotes
Your iPhone is a loaded gun. The WebP vulnerability (CVE-2023-4863) still lurks in 90% of Flutter apps—months after the patch dropped. You’re holding an open door to exploitation. Who’s watching your back? #BLASTPASS #iOS https://t.co/gOeHxlPnny
@geeknik
10 Nov 2024
90 Impressions
0 Retweets
1 Like
0 Bookmarks
0 Replies
0 Quotes
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