Mozilla Firefox up to 140.10.1 WebRTC code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical was found in Mozilla Firefox up to 140.10.1. This affects an unknown part of the component WebRTC. Executing a manipulation can lead to an unknown weakness. This vulnerability appears as CVE-2026-8094. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Mozilla Firefox up to 140.10.1 and classified as critical. This vulnerability affects an unknown function of the component WebRTC. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. The impact remains unknown. CVE summarizes:

Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.

The advisory is available at bugzilla.mozilla.org. This vulnerability was named CVE-2026-8094 since 05/07/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/02/2026). This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 313183 (Linux Distros Unpatched Vulnerability : CVE-2026-8094), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 140.10.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (313183) and CERT Bund (WID-SEC-2026-1427). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Mozilla Firefox
  • Mozilla Firefox ESR

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

ADP CISA Base Score: 9.8
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
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: 313183
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-8094

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Firefox 140.10.2

Timelineinfo

05/07/2026 Advisory disclosed
05/07/2026 +0 days CVE reserved
05/07/2026 +0 days VulDB entry created
07/02/2026 +56 days VulDB entry last update

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2026-8094 (🔒)
GCVE (CVE): GCVE-0-2026-8094
GCVE (VulDB): GCVE-100-361858
CERT Bund: WID-SEC-2026-1427 - Mozilla Firefox und Firefox ESR: Mehrere Schwachstellen

Entryinfo

Created: 05/07/2026 15:23
Updated: 07/02/2026 19:00
Changes: 05/07/2026 15:23 (54), 05/08/2026 19:15 (2), 05/09/2026 09:40 (7), 07/02/2026 19:00 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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