Memory safety bugs present in Firefox 148.0.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 148.0.2.
総合評価: CVE-2026-3847 は中リスク(43.2/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.31%、22 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 | 0.06% | 0.31% | +0.25% |
| 2 | 2026-05-17 | 0.04% | 0.06% | +0.02% |
| 3 | 2026-03-11 | — | 0.04% | — |
EPSS の全履歴 (全 3 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 |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2026-3847: 1 source package rows (firefox); 128 state rows across 2 repos (3.23-community, edge-community); fixed 0, open 128. | https://security.alpinelinux.org/vuln/CVE-2026-3847 |
debian
|
not yet assigned | CVE-2026-3847 not yet assigned priority: Debian including 1 source packages (firefox), 1 status rows across 1 suites (sid): resolved 1. | https://security-tracker.debian.org/tracker/CVE-2026-3847 |
suse
|
high | CVE-2026-3847 severity important: SUSE including 14 source package names (MozillaFirefox, MozillaFirefox-148.0.2-1.1, …), 88 product×package rows across 24 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (24 product lines)): Known Not Affected 83, Fixed 5. | https://www.suse.com/security/cve/CVE-2026-3847/ |
ubuntu
|
medium | CVE-2026-3847 medium priority: Ubuntu including 9 source packages (firefox, mozjs102, …), 40 status rows across 6 suites (bionic, focal, jammy, noble, questing, upstream): DNE 16, needs-triage 10, ignored 8, not-affected 5, needed 1. | https://ubuntu.com/security/CVE-2026-3847 |
| URL | タグ |
|---|---|
| https://bugzilla.mozilla.org/buglist.cgi?bug_id=2017513%2C2017622%2C2019341 | Broken Link |
| https://www.mozilla.org/security/advisories/mfsa2026-19/ | Vendor Advisory |