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Mozilla Firefox EUVDEUVD-2026-60677

| CVE-2026-74947 HIGH
Release of Invalid Pointer or Reference (CWE-763)
2026-08-18 mozilla GHSA-g7qh-rpm5-5c52
Privilege Escalation Red Hat Mozilla Suse
8.8
CVSS 3.1 · Vendor: mozilla
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Severity by source

Vendor (mozilla) PRIMARY
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
8.8 HIGH

Network-delivered via malicious web content, user must load the page (UI:R), no privileges needed; full C/I/A within browser scope justified by privilege escalation with total technical impact.

3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
HIGH
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from Vendor (mozilla).

CVSS VectorVendor: mozilla

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Analysis Generated
Aug 18, 2026 - 16:29 vuln.today
CVSS changed
Aug 18, 2026 - 16:22 NVD
8.8 (None) 8.8 (HIGH)
CVE Published
Aug 18, 2026 - 12:23 cve.org
UNKNOWN (no severity yet)
CVE Published
Aug 18, 2026 - 12:23 cve.org
HIGH 8.8

DescriptionCVE.org

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 154 and Firefox ESR 153.1.

Articles & Coverage 1

News 12 New Mozilla Vulnerabilities - 12 High Severity, No POC Available Aug 18, 2026

AnalysisAI

Privilege escalation via invalid pointer dereference in Mozilla Firefox's Graphics component allows a remote attacker to gain elevated privileges within the browser context. Affected versions are all Firefox releases prior to 154 and all Firefox ESR releases prior to 153.1, with patches confirmed in Mozilla advisories mfsa2026-74 and mfsa2026-77. No public exploit identified at time of analysis, and CISA's SSVC framework rates exploitation status as none with the attack not automatable, though technical impact is assessed as total.

Technical ContextAI

CWE-763 (Release of Invalid Pointer or Reference) describes a class of memory-management flaw where code attempts to use or free a pointer that does not reference a valid, allocated memory region. In Firefox's Graphics component - which handles GPU-accelerated rendering, canvas operations, and WebGL - invalid pointer handling during graphics processing can corrupt process memory. The affected product is identified by CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* covering all Firefox versions prior to the fix. Because the CVSS Scope is Unchanged (S:U), the privilege escalation likely elevates attacker control within the browser's rendering process rather than breaking the OS-level sandbox entirely, though the C:H/I:H/A:H impacts indicate full compromise of the affected security context.

RemediationAI

Vendor-released patch: Firefox 154 and Firefox ESR 153.1. Users and administrators should upgrade to these versions immediately via the browser's built-in update mechanism or via organizational software distribution tooling. Enterprise deployments on the ESR channel should move to ESR 153.1; consumer and standard deployments should move to Firefox 154. Advisory references are https://www.mozilla.org/security/advisories/mfsa2026-74/ and https://www.mozilla.org/security/advisories/mfsa2026-77/. If immediate patching is not feasible, a compensating control is to block or restrict access to untrusted web content at the network perimeter (web proxy category filtering) to reduce the likelihood of users reaching malicious pages, though this is not a substitute for patching and will not protect against malicious content delivered via email links or trusted-but-compromised sites.

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Vendor StatusVendor

SUSE

Severity: Important
Product Status
Container suse/kiosk/firefox-esr:140.14-75.12 Affected
SUSE Linux Enterprise Desktop 15 SP7 SUSE Linux Enterprise High Performance Computing 15 SP7 SUSE Linux Enterprise Module for Desktop Applications 15 SP7 SUSE Linux Enterprise Server 15 SP7 SUSE Linux Enterprise Server for SAP Applications 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Fixed

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EUVD-2026-60677 vulnerability details – vuln.today
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