CVE-2024-6603

Q: How do I fix CVE-2024-6603?

Published advisories record a fix for 20 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Q: Is CVE-2024-6603 being actively exploited?

Not that we know of. CVE-2024-6603 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.53% is the estimated probability that it will be exploited in the next 30 days. That is higher than 42% of all scored CVEs.

Q: How severe is CVE-2024-6603?

CVE-2024-6603 has a CVSS v3 base score of 7.4, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2024-6603 affect?

Published advisories record a fix for firefox (Debian), firefox (Rocky), firefox (Red Hat / RHEL), firefox-debuginfo (Rocky), and 16 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

7.4

CVSS v3

NVD

Description

In an out-of-memory scenario an allocation could fail but free would have been called on the pointer afterwards leading to memory corruption. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.

CWE-823

How to fix

Remediation Available

firefoxDebian

Fixed in:128.0-1CVE-2024-6603

firefoxRocky

Fixed in:0:115.13.0-3.el7_9RHSA-2024:4508

Fixed in:0:115.13.0-3.el7_9.ppc64RHSA-2024:4508

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4586

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

firefoxRed Hat / RHEL

Fixed in:0:115.13.0-3.el7_9RHSA-2024:4508

Fixed in:0:115.13.0-3.el7_9.ppc64RHSA-2024:4508

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4586

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

firefox-debuginfoRocky

Fixed in:0:115.13.0-3.el7_9.ppc64RHSA-2024:4508

Fixed in:0:115.13.0-3.el7_9RHSA-2024:4508

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4586

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

firefox-debuginfoRed Hat / RHEL

Fixed in:0:115.13.0-3.el7_9RHSA-2024:4508

Fixed in:0:115.13.0-3.el7_9.ppc64RHSA-2024:4508

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4586

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

firefox-debugsourceRocky

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4586

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

firefox-debugsourceRed Hat / RHEL

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4517

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4610

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4590

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4586

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4634

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4501

firefox-x11Rocky

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

firefox-x11Red Hat / RHEL

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4673

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4500

thunderbirdRed Hat / RHEL

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4671

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4717

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

thunderbirdRocky

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4671

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4717

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

thunderbird-debuginfoRocky

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4717

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4671

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4671

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

thunderbird-debuginfoRed Hat / RHEL

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4717

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4671

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

thunderbird-debugsourceRocky

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4671

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4717

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

thunderbird-debugsourceRed Hat / RHEL

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_10RHSA-2024:4635

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_8RHSA-2024:4718

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_2RHSA-2024:4717

Fixed in:0:115.13.0-3.el8_6RHSA-2024:4894

Fixed in:0:115.13.0-3.el8_4RHSA-2024:4671

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_0RHSA-2024:4625

Fixed in:0:115.13.0-3.el9_4RHSA-2024:4624

Fixed in:0:115.13.0-3.el9_2RHSA-2024:4670

firefoxUbuntu

Fixed in:128.0+build2-0ubuntu0.20.04.1USN-6890-1

thunderbirdUbuntu

Fixed in:1:115.13.0+build5-0ubuntu0.20.04.1USN-6903-1

Fixed in:1:115.13.0+build5-0ubuntu0.22.04.1USN-6903-1

DeveloperEditionWindows application

Affected:128.0Fixed in:128.0Mozilla

Affected:115.13Fixed in:115.13Mozilla

Mozilla Firefox (en-US)Windows application

Affected:128.0Fixed in:128.0Mozilla

Affected:115.13Fixed in:115.13Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:116.0 128.0Fixed in:128.0Mozilla

Affected:115.13Fixed in:115.13Mozilla

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

0.53%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Vendor Advisory4

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-823 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2016-2161	High	7.5	21%	-	Fix
CVE-2020-6112	High	7.8	17%	-	-
CVE-2020-27009	High	8.1	7.2%	-	Fix
CVE-2023-46724	High	8.6	4.0%	-	Fix
CVE-2020-13573	High	7.5	3.4%	-	-
CVE-2022-0685	High	7.8	1.7%	-	Fix

Common questions

How do I fix CVE-2024-6603?

Published advisories record a fix for 20 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2024-6603 being actively exploited?

Not that we know of. CVE-2024-6603 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.53% is the estimated probability that it will be exploited in the next 30 days. That is higher than 42% of all scored CVEs.

How severe is CVE-2024-6603?

CVE-2024-6603 has a CVSS v3 base score of 7.4, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2024-6603 affect?

Published advisories record a fix for firefox (Debian), firefox (Rocky), firefox (Red Hat / RHEL), firefox-debuginfo (Rocky), and 16 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2024-6603

Markdown

[![CVE-2024-6603](https://tridentstack.com/cve/badge/CVE-2024-6603.svg)](https://tridentstack.com/cve/CVE-2024-6603)

HTML

<a href="https://tridentstack.com/cve/CVE-2024-6603"><img src="https://tridentstack.com/cve/badge/CVE-2024-6603.svg" alt="CVE-2024-6603"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it works Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-04.