CVE-2023-4050: Buffer Overflow

Published Aug 1, 2023
·
Updated

In some cases, an untrusted input stream was copied to a stack buffer without checking its size. This resulted in a potentially exploitable crash which could have led to a sandbox escape.

Affected Software

19 affected componentsFixes available
redhat/firefox<102.14
102.14
redhat/firefox<115.1
115.1
redhat/thunderbird<102.14
102.14
redhat/thunderbird<115.1
115.1
Mozilla Thunderbird<102.14
102.14
Mozilla Thunderbird<115.1
115.1
Mozilla Firefox<116
116
Mozilla Firefox ESR<102.14
102.14
Mozilla Firefox ESR<115.1
115.1
Mozilla Firefox<116.0
Mozilla Firefox>=102.0<102.14
Mozilla Firefox>=115.0<115.1
Debian Debian Linux=11.0
Debian Debian Linux=12.0
Mozilla Firefox ESR>=102.0<102.14
Mozilla Firefox ESR>=115.0<115.1
debian/firefox
137.0.2-1
debian/firefox-esr
115.14.0esr-1~deb11u1128.9.0esr-1~deb11u1128.8.0esr-1~deb12u1128.9.0esr-1~deb12u1128.9.0esr-2
debian/thunderbird
1:115.12.0-1~deb11u11:128.9.0esr-1~deb11u11:128.8.0esr-1~deb12u11:128.9.0esr-1~deb12u11:128.9.0esr-1

Event History

Aug 1, 2023
CVE Published
via Mozilla·12:00 AM
CVE Published
via MITRE·02:58 PM
Data Sourced
via MITRE·02:58 PM
DescriptionWeakness
Data Sourced
03:15 PM
Description
Jan 12, 2024
Data Sourced
via Launchpad·12:24 AM
Description
Sep 16, 2024
Data Sourced
via Ubuntu·04:16 AM
RemedyDescriptionSeverityAffected Software
Mar 27, 2025
Data Sourced
via Debian·02:08 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2023-4050?

The severity of CVE-2023-4050 is high.

2

Which software is affected by CVE-2023-4050?

CVE-2023-4050 affects Mozilla Thunderbird, Firefox, and Firefox ESR.

3

How can I fix CVE-2023-4050?

To fix CVE-2023-4050, update Mozilla Thunderbird to version 115.1, Firefox to version 116, or Firefox ESR to version 102.14.

4

Are there any references related to CVE-2023-4050?

Yes, you can find more information about CVE-2023-4050 at the following links: [Link1](https://www.mozilla.org/security/advisories/mfsa2023-30/), [Link2](https://www.mozilla.org/security/advisories/mfsa2023-31/), [Link3](https://bugzilla.mozilla.org/show_bug.cgi?id=1843038).

5

What is the Common Weakness Enumeration (CWE) for CVE-2023-4050?

The CWE for CVE-2023-4050 is CWE-787.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203