Memory safety bugs fixed in Firefox 152.0.4 (CVE-2026-14241) | HOL Guard CVE

Critical · CVSS 9.8CVE-2026-14241

Memory safety bugs fixed in Firefox 152.0.4

Answer in brief

CVE-2026-14241 records a Critical severity (CVSS 9.8) vulnerability in Memory safety bugs fixed in Firefox 152.0.4. The current sources do not mark it as known exploited. Affected software not mapped in the current feed; confirm the named product and version against your inventory.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 30, 2026Updated Jul 6, 2026Source checked Aug 5, 2026First seen by HOL Jun 30, 2026Material review Jul 6, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: Not mapped
Fix availability: Not reported

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

Affected software not mapped in the current feed; confirm the named product and version against your inventory.

Recommended response

Confirm exposure. Identify whether the named product or interface exists in your inventory, then review the linked upstream references for affected versions and vendor guidance.

Evidence timeline and material changes

Published upstream
Jun 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Jul 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jun 30, 2026

Sources and claim methodology

Upstream source description

Memory safety bugs present in Firefox 152.0.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 152.0.4.

Quoted source text, attributed separately from HOL analysis.

Back to active CVEs

Critical · CVSS 9.8CVE-2026-14241

Memory safety bugs fixed in Firefox 152.0.4

Answer in brief

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jun 30, 2026Updated Jul 6, 2026Source checked Aug 5, 2026First seen by HOL Jun 30, 2026Material review Jul 6, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: Not mapped
Fix availability: Not reported

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

Affected software not mapped in the current feed; confirm the named product and version against your inventory.

Recommended response

Confirm exposure. Identify whether the named product or interface exists in your inventory, then review the linked upstream references for affected versions and vendor guidance.

Evidence timeline and material changes

Published upstream
Jun 30, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Jul 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jun 30, 2026

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.