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.
総合評価: CVE-2025-8028 は中リスク（51.4/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 0.45%、36 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.78% | 0.45% | -0.33% |
| 2 | 2026-05-18 | 0.18% | 0.78% | +0.60% |
| 3 | 2026-04-07 | — | 0.18% | — |
EPSS の全履歴 （全 5 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-8028: 3 source package rows (firefox, firefox-esr, thunderbird); 381 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 381. | https://security.alpinelinux.org/vuln/CVE-2025-8028 |
debian
|
not yet assigned | CVE-2025-8028 not yet assigned priority: Debian including 3 source packages (firefox, firefox-esr, thunderbird), 11 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11. | https://security-tracker.debian.org/tracker/CVE-2025-8028 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-8028 |
suse
|
high | CVE-2025-8028 severity important: SUSE including 79 source package names (2.1.3-4.11:qemu-guest-agent-8.2.7-1.1, MozillaFirefox-140.1.0-112.273.1, …), 356 product×package rows across 47 product lines (Container suse/sl-micro/6.0/kvm-os-container, Image SLES12-SP5-SAP-Azure-LI-BYOS-Production, … (47 product lines)): Fixed 353, First Fixed 3. | https://www.suse.com/security/cve/CVE-2025-8028/ |
ubuntu
|
medium | CVE-2025-8028 medium priority: Ubuntu including 9 source packages (firefox, mozjs102, …), 49 status rows across 7 suites (bionic, focal, jammy, noble, plucky, questing, upstream): DNE 22, ignored 9, needs-triage 9, not-affected 7, released 2. | https://ubuntu.com/security/CVE-2025-8028 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| mozilla | firefox | < 115.26.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* |
| mozilla | firefox | < 141.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* |
| mozilla | firefox | >= 128.0, < 128.13.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* |
| mozilla | firefox | >= 140.0, < 140.1.0 | cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* |
| mozilla | thunderbird | < 128.13.0 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* |
| mozilla | thunderbird | < 141.0 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* |
| mozilla | thunderbird | >= 140.0, < 140.1.0 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* |
| URL | タグ |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1971581 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-56/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-57/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-58/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-59/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-61/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-62/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-63/ | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html |