vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2023-4863

HIGH
8.8
CVSS Score
Published: September 12, 2023 at 02:24 PM UTC
Updated: June 17, 2026 at 06:38 AM UTC
13 products affected across 9 vendorsDebian LinuxChromeFedora

Using Chrome by Google?

Get instant alerts when new vulnerabilities affect Chrome - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.8
Exploitation
CISA KEV
Exploit prediction
EPSS 100%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score100.0%

EPSS (Exploit Prediction Scoring System) estimates a 100.0% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Google Chromium WebP contains a heap-based buffer overflow vulnerability that allows a remote attacker to perform an out-of-bounds memory write via a crafted HTML page. This vulnerability can affect applications that use the WebP Codec.

Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware Use
Unknown
Added to KEV
Sep 13, 2023
Remediation Due
Oct 4, 2023
1120 days overdue
Notes
https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_11.html?m=1
https://nvd.nist.gov/vuln/detail/CVE-2023-4863

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)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Honeyview· Bandisoft
95%
v < 5.51
Affected range stops below 5.51, so it looks safe — our inference, not a vendor statement
Seequent Leapfrog· Bentley
95%
v < 2023.2
Affected range stops below 2023.2, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%
10.011.012.0
Fedora· Fedora Projectrpm
95%
373839
Chrome· Googlenpm
95%
v < 116.0.5845.187
Affected range stops below 116.0.5845.187, so it looks safe — our inference, not a vendor statement
Edge Chromium· Microsoft
95%
v < 116.0.1938.81
Affected range stops below 116.0.1938.81, so it looks safe — our inference, not a vendor statement
Teams· Microsoft
95%
v < 1.6.00.26463v < 1.6.00.26474
Affected range stops below 1.6.00.26463, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.6.00.26474, so it looks safe — our inference, not a vendor statement
WebP Image Extension· Microsoft
95%
v < 1.0.62681.0
Affected range stops below 1.0.62681.0, so it looks safe — our inference, not a vendor statement
Firefox· Mozilla
95%
v < 102.15.1v < 117.0.1115.1.0 ≤ v < 115.2.1
Affected range stops below 102.15.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 115.2.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 117.0.1, so it looks safe — our inference, not a vendor statement
Thunderbird· Mozilla
95%
v < 102.15.1115.0 ≤ v < 115.2.2
Affected range stops below 102.15.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 115.2.2, so it looks safe — our inference, not a vendor statement

References (47)

Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/21/4
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/22/1
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/22/3
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/22/4
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/22/5
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/22/6
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/22/7
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/09/22/8

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card