CVE-2026-0885 Details
Description
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
A use-after-free vulnerability has been identified in the JavaScript: GC component of Mozilla Firefox. This issue affects Firefox versions prior to 147 and Firefox ESR versions prior to 140.7. The vulnerability arises from improper memory management, which can potentially be exploited to cause memory corruption.
Users can upgrade to Firefox 147 or Firefox ESR 140.7 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2003607 | [email protected] | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-01/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-03/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-04/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-05/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 140.7.0 < 147.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 140.7.0 < 147.0 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Apr 13, 2026 | CVE Modified | [email protected] |
| Jan 22, 2026 | Initial Analysis | [email protected] |
| Jan 15, 2026 | CVE Modified | [email protected] |
| Jan 13, 2026 | CVE Modified | CISA-ADP |
| Jan 13, 2026 | New CVE Received | [email protected] |