CISA KEV · Known exploitedCritical

CVE-2024-9680

Mozilla Firefox, Firefox ESR, Thunderbird

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: 9.8
EPSS: 23.2%
CISA KEV: Listed
Published: 2024.10.09

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability23.2%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Mozilla Firefox, Firefox ESR, Thunderbird
Affected versions: >= unspecified < 131.0.2, >= unspecified < 128.3.1, >= unspecified < 115.16.1, >= unspecified < 131.0.1, >= unspecified < 115.16.0, < 131.0.2, < 128.3.1, < 115.16.1, < 131.0.1, < 115.16.0, >= 128.1.0 < 128.3.1, >= 128.0.1 < 128.3.1, 131.0, 11.0
Fixed versions: 115.16.1, 131.0.2, 128.3.1, 115.16.0

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Due date: 2024.11.05

1
Identify
Confirm that Mozilla Firefox, Firefox ESR, Thunderbird and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-416
KEV added: 2024.10.15
Ransomware use: 확인됨