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Mozilla CVE-2026-2785

CRITICAL
Access of Uninitialized Pointer (CWE-824)
2026-02-24 security@mozilla.org
Information Disclosure Memory Corruption Mozilla
Critical
Disputed · 9.8 NVD
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Severity by source

Sources disagree (Medium–Critical)
NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SUSE
8.8 HIGH
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Red Hat
6.1 MEDIUM
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch released
Apr 10, 2026 - 08:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 24, 2026 - 14:16 nvd
CRITICAL 9.8

DescriptionCVE.org

Invalid pointer in the JavaScript Engine component. This vulnerability affects Firefox < 148, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

AnalysisAI

Invalid pointer in Firefox JavaScript Engine before 148. Incorrect pointer computation leads to memory corruption.

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  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Send malicious JavaScript code
Exploit
Trigger invalid pointer dereference
Execution
Corrupt memory region
Impact
Execute arbitrary code with browser privileges
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Vulnerability AssessmentAI

Exploitation No special conditions — remote unauthenticated exploitation against default Firefox or Thunderbird installations when processing untrusted JavaScript content. Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 9.8. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario JavaScript operations trigger invalid pointer dereference for code execution.
Remediation Update Firefox to 148+. Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all Firefox and Thunderbird installations across the organization and disable JavaScript execution where operationally feasible, or restrict browser usage to critical business functions only. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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Same weakness CWE-824 – Access of Uninitialized Pointer

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Vendor StatusVendor

SUSE

Severity: High
Product Status
Container suse/sl-micro/6.0/baremetal-os-container:2.1.3-6.61 Container suse/sl-micro/6.0/base-os-container:2.1.3-7.27 Container suse/sl-micro/6.0/kvm-os-container:2.1.3-6.52 Container suse/sl-micro/6.0/rt-os-container:2.1.3-7.63 Container suse/sl-micro/6.0/toolbox:13.2-9.16 Image SL-Micro Affected
Image SL-Micro-BYOS-GCE Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Affected
Image SLES12-SP5-SAP-Azure-LI-BYOS-Production Image SLES12-SP5-SAP-Azure-VLI-BYOS-Production Affected
Image SLES15-SP5-SAP-Azure-LI-BYOS Image SLES15-SP5-SAP-Azure-LI-BYOS-Production Image SLES15-SP5-SAP-Azure-VLI-BYOS Image SLES15-SP5-SAP-Azure-VLI-BYOS-Production Image SLES15-SP7-SAP-Azure-LI-BYOS-Production Image SLES15-SP7-SAP-Azure-VLI-BYOS-Production Affected
SUSE Liberty Linux 8 Fixed

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CVE-2026-2785 vulnerability details – vuln.today
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