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CVE-2024-9680

Mozilla Firefox Use-After-Free

9.8 CRITICALActively exploited (CISA KEV)Used in ransomwareEPSS 23.2%
  1. Published9 Oct 2024
  2. Added to CISA KEV15 Oct 2024
  3. Remediation due5 Nov 2024
Actively exploited (CISA KEV)

Mozilla Firefox and Firefox ESR contain a use-after-free vulnerability in Animation timelines that allows for code execution in the content process.

Added to KEV: 15 Oct 2024Federal remediation due: 5 Nov 2024Used in ransomware

Description

An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox < 131.0.2, Firefox ESR < 128.3.1, Firefox ESR < 115.16.1, Thunderbird < 131.0.1, Thunderbird < 128.3.1, and Thunderbird < 115.16.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Mozilla Firefox< 131.0.2 · ≥ 128.1.0 < 128.3.1 · < 115.16.1
Mozilla Thunderbird≥ 128.0.1 < 128.3.1 · < 115.16.0 · 131.0
Debian Linux11.0

Remediation

Fixed in
Mozilla Firefox≥ 131.0.2
Mozilla Thunderbird≥ 128.3.1

References

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Frequently asked

Is CVE-2024-9680 being actively exploited?

Yes. CVE-2024-9680 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 Oct 2024. It has been used in ransomware campaigns.

How severe is CVE-2024-9680?

CVE-2024-9680 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 23.2% probability of exploitation.

Which products are affected by CVE-2024-9680?

Affected products include Mozilla Firefox, Mozilla Thunderbird, Debian Linux.

How do I fix CVE-2024-9680?

Upgrade affected software to a fixed version, for example Mozilla Firefox 131.0.2, Mozilla Thunderbird 128.3.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-9680 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.