CVE-2024-9680Known exploitationNetwork attack vector

Content-process code execution via dangling animation pointer

Published Oct 9, 2024 · Updated Aug 4, 2026

Use-after-free in Mozilla Firefox, Firefox ESR, and Thunderbird allows remote attackers to execute code in the content process. AnimationTimeline::Tick can free an Animation object while the timeline still iterates its raw pointer, leaving AnimationTimeline::RemoveAnimation to manipulate a dangling pointer. A crafted web page triggers the flaw without further user interaction; Thunderbird mail reading disables scripting, so its exposure requires a browser-like context.

CVSS severity9.8
Critical
EPSS probability23.18%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Mozilla Firefox, Firefox ESR, and Thunderbird allows remote attackers to execute code in the content process. AnimationTimeline::Tick can free an Animation object while the timeline still iterates its raw pointer, leaving AnimationTimeline::RemoveAnimation to manipulate a dangling pointer. A crafted web page triggers the flaw without further user interaction; Thunderbird mail reading disables scripting, so its exposure requires a browser-like context.

The record

CVE
CVE-2024-9680
Published
Oct 9, 2024
Updated
Aug 4, 2026
Vendor
Mozilla
Product
Firefox
Classifications
CWE-416, T1189, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 3, 2024Exploitation reportedRomCom zero-day campaign
  2. Oct 9, 2024CVE publishedPublication date reported by the CVE source.
  3. Aug 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <131.0.2
  2. Affected versionversion=unspecified <131.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mozilla · Firefoxversion=0 <131.0.2; version=unspecified <131.0.2
Mozilla · Thunderbirdversion=0 <115.16.0; version=0 <128.3.1; version=0 <131.0.1; version=unspecified <115.16.0; version=unspecified <128.3.1; version=unspecified <131.0.1
Mozilla · Firefox ESRversion=0 <115.16.1; version=0 <128.3.1; version=unspecified <115.16.1; version=unspecified <128.3.1

Published CVSS scores

9.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1189Drive-by Compromise
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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