Mozilla Network Security Service (NSS) library before 3.11.3, as used in Mozilla Firefox before 1.5.0.7, Thunderbird before 1.5.0.7, and SeaMonkey before 1.0.5, when using an RSA key with exponent 3, does not properly handle extra data in a signature, which allows remote attackers to forge signatures for SSL/TLS and email certificates, a similar vulnerability to CVE-2006-4339. NOTE: on 20061107, Mozilla released an advisory stating that these versions were not completely patched by MFSA2006-60. The newer fixes for 1.5.0.7 are covered by CVE-2006-5462.
総合評価: CVE-2006-4340 は中リスク(43.3/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 2.15%、80 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 | 2.70% | 2.15% | -0.55% |
| 2 | 2026-04-12 | 3.09% | 2.70% | -0.39% |
| 3 | 2026-04-04 | — | 3.09% | — |
EPSS の全履歴 (全 24 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 |
|---|---|---|---|---|---|---|
| 4.0 | 2.0 | MEDIUM |
|
4.9 | 4.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
high | CVE-2006-4340 high priority: Debian including 2 source packages (firefox, thunderbird), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. | https://security-tracker.debian.org/tracker/CVE-2006-4340 |
gentoo
|
normal | CVE-2006-4340: 3 GLSA(s) (200609-19, 200610-01, 200610-06), 5 atom(s) (dev-libs/nss, mail-client/mozilla-thunderbird, mail-client/mozilla-thunderbird-bin, www-client/mozilla-firefox, www-client/mozilla-firefox-bin); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2006-4340 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2006-4340 |
ubuntu
|
medium | CVE-2006-4340 medium priority: Ubuntu including 6 source packages (firefox, firefox-granparadiso, lightning-sunbird, midbrowser, mozilla-thunderbird, xulrunner), 24 status rows across 4 suites (dapper, edgy, feisty, upstream): DNE 10, needs-triage 6, released 5, not-affected 2, ignored 1. | https://ubuntu.com/security/CVE-2006-4340 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| mozilla | firefox | <= 1.5.0.6 | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
| mozilla | network_security_services | <= 3.11.2 | cpe:2.3:a:mozilla:network_security_services:*:*:*:*:*:*:*:* |
| mozilla | seamonkey | <= 1.0.4 | cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:* |
| mozilla | thunderbird | <= 1.5.0.6 | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* |