Mozilla Firefox up to 147.0.1 Layout use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 147.0.1. This impacts an unknown function of the component Layout. The manipulation results in use after free. This vulnerability is cataloged as CVE-2026-24869. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Firefox up to 147.0.1. Affected is some unknown functionality of the component Layout. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Use-after-free in the Layout: Scrolling and Overflow component. This vulnerability affects Firefox < 147.0.2.

The advisory is shared for download at bugzilla.mozilla.org. This vulnerability is traded as CVE-2026-24869 since 01/27/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/27/2026).

The vulnerability scanner Nessus provides a plugin with the ID 297406 (Linux Distros Unpatched Vulnerability : CVE-2026-24869), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 147.0.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (297406) and CERT Bund (WID-SEC-2026-0232). Once again VulDB remains the best source for vulnerability data.

Affected

  • Mozilla Firefox

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 8.8
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 297406
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-24869

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Firefox 147.0.2

Timelineinfo

01/27/2026 Advisory disclosed
01/27/2026 +0 days CVE reserved
01/27/2026 +0 days VulDB entry created
02/27/2026 +31 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2026-24869 (🔒)
GCVE (CVE): GCVE-0-2026-24869
GCVE (VulDB): GCVE-100-343044
CERT Bund: WID-SEC-2026-0232 - Mozilla Firefox: Mehrere Schwachstellen

Entryinfo

Created: 01/27/2026 17:26
Updated: 02/27/2026 02:11
Changes: 01/27/2026 17:26 (56), 01/28/2026 21:11 (7), 01/31/2026 23:39 (2), 02/27/2026 02:11 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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