CVE-2026-8972

Description

Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Overview

State: PUBLISHED
Assigner (CNA): mozilla
CVSS severity: high
CVSS score: 8.8 / 10
CVSS vector: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Effective score: 8.8 / 10 HIGH source: CNA overview
CWE(s): —
Reserved: 2026-05-19
Published: 2026-05-19 12:30 UTC
Last updated: 2026-05-20 15:38 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/8xxx/CVE-2026-8972.json
Linked Threat: CVE-2026-8972 — CVE-2026-8972

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-05-19 14:16:53 UTC
NVD last modified: 2026-05-20 17:16:31 UTC
NVD CVSS v3.1: 8.8 / 10 HIGH source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability subscore: 2.8 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0004 (probability of exploitation in next 30 days)
EPSS percentile: 11.48% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD-assigned CWE(s): CWE-269 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-30924
Assigner: mozilla
Published: May 19, 2026, 12:30:20 PM
Updated: May 20, 2026, 3:38:39 PM
EUVD base score (CVSS 3.1): 8.8 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EUVD-reported EPSS: 0.0400
Aliases: GHSA-96x7-hrvx-gqj6

ENISA description: Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

EUVD references (3)

Affected products (2)

Vendor	Product	Versions	Platforms
Mozilla	Firefox	`151` (unaffected)	—
Mozilla	Thunderbird	`151` (unaffected)	—

Affected products — CPE 2.3 (2) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Vendor references (3)

References embedded in the original CVE record by the assigning CNA.

Web references (11)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

http://www.mozilla.org/security/announce/2026/mfsa2026-50.html rapid7:www.mozilla.org
https://attackerkb.com/topics/CVE-2026-8972 rapid7:attackerkb.com
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-30924 rapid7:euvd.enisa.europa.eu
http://cwe.mitre.org/data/definitions/269.html rapid7:cwe.mitre.org
http://www.mozilla.org/security/announce/2026/mfsa2026-46.html rapid7:www.mozilla.org
https://www.cve.org/CVERecord?id=CVE-2026-8972 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org
https://www.mozilla.org/security/advisories/mfsa2026-46/ tenable:www.mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-50/ tenable:www.mozilla.org
https://bugzilla.mozilla.org/show_bug.cgi?id=2033275 tenable:bugzilla.mozilla.org
https://nvd.nist.gov/vuln/detail/CVE-2026-8972 tenable:nvd.nist.gov

NVD-tagged references (3)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://bugzilla.mozilla.org/show_bug.cgi?id=2033275 security@mozilla.org Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-46/ security@mozilla.org Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-50/ security@mozilla.org Vendor Advisory

Remediations (18)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

CVE-2026-8972 - Vulnerability Details - OpenCVE

web:app.opencve.io

This privilege escalation flaw in Mozilla Firefox and Thunderbird's WebRTC Audio/Video component permits an attacker to gain higher privileges within the browser by exploiting improper authorization controls. The vulnerability, fixed in Firefox 151 and Thunderbird 151, could allow code execution with elevated rights, enabling access to sensitive data or system resources. It maps to the listed ...

2026-05-24 12:02 UTC
Security Advisory Bulletin 064 | Ubiquiti Community

web:community.ui.com

Published: May 21, 2026 Updated: May 22, 2026 Version: 1.1 Revision: 1.1 Summary 1 of 5 A malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS devices to execute a Command Injection. Affected Products: UniFi OS Server (Version 5.0.6 and earlier) Mitigation : Update your UniFi OS Server to Version 5.0.8 or later ...

2026-05-24 12:02 UTC
CVE-2026-8972 - Privilege escalation in the WebRTC: Audio/Video component

web:cvefeed.io

The following products are affected by CVE-2026-8972 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

2026-05-24 12:02 UTC
Critical Chrome Vulnerabilities Enables Remote Code Execution Attacks ...

web:cybersecuritynews.com

Google released a critical Chrome update fixing multiple high-risk vulnerabilities that could enable arbitrary code execution.

2026-05-24 12:02 UTC
CVE-2026-8972 - Exploits & Severity - Feedly

web:feedly.com

A vulnerability labeled as critical has been found in Mozilla Firefox up to 150 . Affected is an unknown function of the component Audio/Video . Such manipulation leads to Remote Code Execution. This vulnerability is uniquely identified as CVE-2026-8972 . The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

2026-05-24 12:02 UTC
Nvd - Cve-2026-8972

web:nvd.nist.gov

An official website of the United States government Here's how you know

2026-05-24 12:02 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-05-24 12:02 UTC
Emergency patch issued for Microsoft Office, 365 over hacking threat - MSN

web:www.msn.com

Original story: Microsoft has released an emergency patch for a vulnerability in the company's Office programs that's already being exploited by hackers.

2026-05-24 12:02 UTC
CVE-2026-8972 Common Vulnerabilities and Exposures | SUSE

web:www.suse.com

Secure your Linux systems from CVE-2026-8972 . Stay ahead of potential threats with the latest security updates from SUSE.

2026-05-24 12:02 UTC
CVE-2026-8972 - High Vulnerability - TheHackerWire

web:www.thehackerwire.com

What Mozilla products are affected by CVE-2026-8972 ? This vulnerability affects Mozilla Firefox products. Users of affected versions should apply security updates immediately. How do I fix or mitigate CVE-2026-8972 ? When was CVE-2026-8972 disclosed?

2026-05-24 12:02 UTC
Privilege escalation in the WebRTC: Audio/Video component...

web:github.com

Description Privilege escalation in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 151.

2026-05-26 02:58 UTC
CVE-2026-8972 | Mondoo Vulnerability Intelligence

web:mondoo.com

CVE-2026-8972 - HIGH severity: Privilege escalation in the WebRTC: Audio/Video component

2026-05-26 02:58 UTC
Nvd - Cve-2026-8952

web:nvd.nist.gov

An official website of the United States government Here's how you know

2026-05-26 02:58 UTC
Addressing Exchange Server May 2026 vulnerability CVE-2026-42897

web:techcommunity.microsoft.com

We wanted to tell you how to address the Exchange Server May 2026 vulnerability CVE - 2026 -42897.

2026-05-26 02:58 UTC
CVE-2026-42897 Exchange OWA Mitigation M2: What Admins Must Verify

web:windowsforum.com

Microsoft's Fastest Fix Is a Mitigation , Not a Patch The important detail in Microsoft's May 14 notice is that there is no permanent Exchange security update available yet for CVE - 2026 -42897. Microsoft says it is working on one and will release it later for affected supported paths, but today's defensive action is mitigation .

2026-05-26 02:58 UTC
Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation

web:www.forbes.com

Microsoft Exchange users are urged to mitigate a zero-day vulnerability that CISA has confirmed is under active exploitation.

2026-05-26 02:58 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-05-26 02:58 UTC
Rapid7 Vulnerability Database

web:www.rapid7.com

Rapid7's VulnDB is curated repository of vetted computer software exploits and exploitable vulnerabilities.

2026-05-26 02:58 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-8972.json.

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