KEV Intelligence

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2024-9680

Firefox

Mozilla / Firefox · affected before 131.0.2

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Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
23.2%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2024-9680 is an unauthenticated vulnerability affecting Mozilla Firefox and 2 other products. An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Mozilla / Firefox affected before 131.0.2.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Firefox

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.

Vendor Product Affected Status
mozilla firefox Before 131.0.2 Affected
mozilla firefox_esr Before 128.3.1 Affected
mozilla firefox_esr Before 115.16.1 Affected
mozilla firefox_esr Before 128.3.1 Affected
mozilla firefox_esr Before 115.16.1 Affected
mozilla thunderbird Before 131.0.1 Affected
mozilla thunderbird Before 128.3.1 Affected
mozilla thunderbird Before 115.16.0 Affected
mozilla thunderbird Before 131.0.1 Affected
mozilla thunderbird Before 128.3.1 Affected
mozilla thunderbird Before 115.16.0 Affected
mozilla thunderbird Before 131.0.1 Affected
mozilla thunderbird Before 128.3.1 Affected
mozilla thunderbird Before 115.16.0 Affected
Mozilla Firefox Before 131.0.2 Affected
Mozilla Firefox ESR Before 128.3.1 Affected
Mozilla Firefox ESR Before 115.16.1 Affected
Mozilla Thunderbird Before 131.0.1 Affected
Mozilla Thunderbird Before 128.3.1 Affected
Mozilla Thunderbird Before 115.16.0 Affected
Published
09 Oct 2024
Exploitation Reported
15 Oct 2024
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

cisa nessus_scanner malware

CVE References

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 15 Oct 2024

Independent exploitation attestation added to the KEV Intelligence record.

Used in malware

CISA

Recorded 02 Jun 2026

Malware families have been linked to exploitation of this CVE.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source Added
CISA First 2024-10-15 00:00 UTC
CVE 2026-08-04 04:41 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
0
User-Agents
0

Raw values available in Pro and Enterprise.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nessus https://www.tenable.com/plugins/nessus/212185 02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

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

EPSS

23.2%

Weaknesses

Use After Free CWE-416

Recent mention · Google Threat Intelligence

Written by: Casey Charrier, James Sadowski, Clement Lecigne, Vlad Stolyarov Executive Summary Google Threat Intelligence Group (GTIG) tracked 75...

Written by: Casey Charrier, James Sadowski, Clement Lecigne, Vlad Stolyarov Executive Summary Google Threat Intelligence Group (GTIG) tracked 75 zero-day vulnerabilities exploited in the wild in 2024, a decrease from the number we identified in 2023 (98 vulnerabilities), but...

Read full advisory

Timeline

From disclosure to observed exploitation

  1. KEV confirmed by CVE

    Exploitation attested by an external source

  2. First public exploitation report

    Exploit observed in malware

  3. Nessus plugin available

    Scanner coverage available

  4. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  5. CVE published

    Vulnerability disclosed publicly

  6. CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2024-9680

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2024-9680",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.23184,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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