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CVE-2025-8028
Large branch table could lead to truncated instruction
Critical9.8EPSS 0.58%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.58% · top 52% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- unaffected 115.26 – ≤ 115.*
- unaffected 128.13 – ≤ 128.*
- unaffected 140.1 – ≤ 140.*
- unaffected 141 – ≤ *
- unaffected 128.13 – ≤ 128.*
- unaffected 140.1 – ≤ 140.*
- unaffected 141 – ≤ *
References (9)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1971581 (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-56/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-57/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-58/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-59/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-61/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-62/ (opens in a new tab)
- https://www.mozilla.org/security/advisories/mfsa2025-63/ (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-8028)Record last updated .