Home/CVE/Google Chromium WebP Heap-Based Buffer Overflow Vulnerability
CVE

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)

HIGH · CVSS 8.8 ⚠ CISA KEV EPSS 0.93301
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0

Required Remediation

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weakness Classification

Affected Products & Versions

16
google chrome< 116.0.5845.187
debian linuxall versions
mozilla firefox< 102.15.1
mozilla firefox>= 115.1.0 and < 115.2.1
mozilla thunderbird>= 115.0 and < 115.2.2

Affected Packages

19
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/chai2010/webp HIGH fixed in 0.0.0-20250406010349-76805d5a8860
NuGet SkiaSharp HIGH fixed in 2.88.6
NuGet magick.net-q16-anycpu HIGH fixed in 13.3.0
NuGet magick.net-q16-hdri-anycpu HIGH fixed in 13.3.0
NuGet magick.net-q16-x64 HIGH fixed in 13.3.0
NuGet magick.net-q8-anycpu HIGH fixed in 13.3.0
NuGet magick.net-q8-openmp-x64 HIGH fixed in 13.3.0
NuGet magick.net-q8-x64 HIGH fixed in 13.3.0
PyPI Pillow HIGH fixed in 10.0.1
PyPI imagecodecs fixed in 2023.9.18
PyPI opencv-contrib-python fixed in 4.8.1.78
PyPI opencv-contrib-python-headless fixed in 4.8.1.78
PyPI opencv-python fixed in 4.8.1.78
PyPI opencv-python-headless fixed in 4.8.1.78
PyPI pillow fixed in 10.0.1
crates.io libwebp-sys fixed in 0.9.3
crates.io libwebp-sys2 fixed in 0.1.8
crates.io webp HIGH fixed in 0.2.6
npm electron HIGH fixed in 22.3.24

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighMalicious DLL File Dropped in the Teams or OneDrive Folder
producthighSuspicious Teams Application Related ObjectAcess Event
productmediumMicrosoft Teams Sensitive File Access By Uncommon Applications
productmediumRenamed Microsoft Teams Execution
productmediumPotentially Suspicious Command Targeting Teams Sensitive Files
producthighSQLite Firefox Profile Data DB Access

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · chrome-cve-admin@google.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Sep 2023 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

30
suse-csafopenSUSE-SU-2024:14572-1
suse-csafopenSUSE-SU-2024:13227-1
suse-csafopenSUSE-SU-2024:13228-1
suse-csafopenSUSE-SU-2024:13229-1
suse-csafopenSUSE-SU-2024:13231-1
🔗

References & Sources

42
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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