By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability was fixed in Thunderbird 137.0.2 and Thunderbird 128.9.2.
総合評価: CVE-2025-2830 は低リスク（32.7/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.29%、21 パーセンタイル） 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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 | 0.10% | 0.29% | +0.20% |
| 2 | 2026-05-24 | 0.22% | 0.10% | -0.12% |
| 3 | 2026-02-09 | — | 0.22% | — |
EPSS の全履歴 （全 11 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 |
|---|---|---|---|---|---|---|
| 6.3 | 3.1 | MEDIUM |
|
2.8 | 3.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2025-2830: 1 source package rows (thunderbird); 68 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 68. | https://security.alpinelinux.org/vuln/CVE-2025-2830 |
debian
|
not yet assigned | CVE-2025-2830 not yet assigned priority: Debian including 1 source packages (thunderbird), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-2830 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2025-2830 |
suse
|
high | CVE-2025-2830 severity important: SUSE including 15 source package names (MozillaFirefox, MozillaFirefox-branding-upstream, …), 90 product×package rows across 27 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Liberty Linux 8, … (27 product lines)): Known Not Affected 75, Fixed 15. | https://www.suse.com/security/cve/CVE-2025-2830/ |
ubuntu
|
medium | CVE-2025-2830 medium priority: Ubuntu including 1 source packages (thunderbird), 6 status rows across 6 suites (focal, jammy, noble, oracular, plucky, upstream): not-affected 3, released 2, DNE 1. | https://ubuntu.com/security/CVE-2025-2830 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| mozilla | thunderbird | < 128.9.2 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |
| mozilla | thunderbird | >= 129.0, < 137.0.2 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1956379 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-26/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-27/ | Vendor Advisory |