high
8.8
EPSS
0.080%
Advisory Published
CVE Published
Updated

CVE-2023-6863

First published: Tue Dec 19 2023(Updated: )

Last updated 24 July 2024

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
redhat/firefox<115.6
115.6
redhat/thunderbird<115.6
115.6
debian/firefox
135.0.1-1
debian/firefox-esr
115.14.0esr-1~deb11u1
128.7.0esr-1~deb11u1
128.5.0esr-1~deb12u1
128.7.0esr-1~deb12u1
128.7.0esr-1
Thunderbird<115.6
115.6
Firefox<121.0
Firefox ESR<115.6
Thunderbird<115.6
Debian=10.0
Debian=11.0
Debian=12.0
Firefox<121
121
Firefox ESR<115.6
115.6

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2023-6863?

    CVE-2023-6863 is considered a moderate severity vulnerability due to its potential to cause undefined behavior.

  • How do I fix CVE-2023-6863?

    To fix CVE-2023-6863, users should update to Firefox ESR version 115.6 or later, Thunderbird version 115.6 or later, or apply the appropriate package updates for Debian systems.

  • What software is affected by CVE-2023-6863?

    CVE-2023-6863 affects Mozilla Firefox ESR versions prior to 115.6, Thunderbird versions prior to 115.6, and specific versions of the Firefox and Thunderbird packages on Debian.

  • Is CVE-2023-6863 being actively exploited?

    As of now, there is no public information indicating that CVE-2023-6863 is actively being exploited in the wild.

  • What are the potential impacts of CVE-2023-6863?

    The potential impacts of CVE-2023-6863 include application crashes and unstable behavior due to undefined behavior in the affected software.

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