CVE-2025-8028 Details
Description
On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
A vulnerability exists in Mozilla Firefox and Thunderbird on arm64 architectures, where a WebAssembly 'br_table' instruction with numerous entries can cause the label to be too distant from the instruction. This distance can lead to truncation and incorrect calculation of the branch address. The issue is present in Firefox versions prior to 141, Firefox ESR versions prior to 115.26, 128.13, and 140.1, as well as in Thunderbird versions prior to 141, 128.13, and 140.1.
Users can upgrade to Firefox 141 or Thunderbird 141. Firefox ESR users should upgrade to version 115.26, 128.13, or 140.1.
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 Jul 23, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-1332 | Improper Handling of Faults that Lead to Instruction Skips | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 115.26.0 < 141.0 >= 128.0, < 128.13.0 >= 140.0, < 140.1.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 128.13.0 < 141.0 >= 140.0, < 140.1.0 |
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] |
| Nov 3, 2025 | CVE Modified | CVE |
| Jul 28, 2025 | Initial Analysis | [email protected] |
| Jul 23, 2025 | CVE Modified | CISA-ADP |
| Jul 22, 2025 | New CVE Received | [email protected] |