sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
総合評価: CVE-2009-4565 は中リスク（60.2/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 2.37%、82 パーセンタイル） 根拠: 直近 1 日で EPSS が +1.60% 上昇。悪用への関心が高まっている可能性があります。 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 | 0.77% | 2.37% | +1.60% |
| 2 | 2025-12-18 | 0.99% | 0.77% | -0.22% |
| 3 | 2025-12-17 | — | 0.99% | — |
EPSS の全履歴 （全 18 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 |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
medium | CVE-2009-4565 medium priority: Debian including 1 source packages (sendmail), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2009-4565 |
gentoo
|
normal | CVE-2009-4565: 1 GLSA(s) (201206-30), 1 atom(s) (mail-mta/sendmail); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-4565 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2009-4565 |
ubuntu
|
medium | CVE-2009-4565 medium priority: Ubuntu including 1 source packages (sendmail), 10 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): ignored 5, not-affected 4, released 1. | https://ubuntu.com/security/CVE-2009-4565 |
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2009-4565 The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw.
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| sendmail | sendmail | <= 8.14.3 | cpe:2.3:a:sendmail:sendmail:*:*:*:*:*:*:*:* |
| sendmail | sendmail | 2.6 | cpe:2.3:a:sendmail:sendmail:2.6:*:*:*:*:*:*:* |
| sendmail | sendmail | 2.6.1 | cpe:2.3:a:sendmail:sendmail:2.6.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 3.0 | cpe:2.3:a:sendmail:sendmail:3.0:*:*:*:*:*:*:* |
| sendmail | sendmail | 3.0.1 | cpe:2.3:a:sendmail:sendmail:3.0.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 4.1 | cpe:2.3:a:sendmail:sendmail:4.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 4.55 | cpe:2.3:a:sendmail:sendmail:4.55:*:*:*:*:*:*:* |
| sendmail | sendmail | 5 | cpe:2.3:a:sendmail:sendmail:5:*:*:*:*:*:*:* |
| sendmail | sendmail | 5.59 | cpe:2.3:a:sendmail:sendmail:5.59:*:*:*:*:*:*:* |
| sendmail | sendmail | 5.61 | cpe:2.3:a:sendmail:sendmail:5.61:*:*:*:*:*:*:* |
| sendmail | sendmail | 5.65 | cpe:2.3:a:sendmail:sendmail:5.65:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.6.7 | cpe:2.3:a:sendmail:sendmail:8.6.7:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.7.6 | cpe:2.3:a:sendmail:sendmail:8.7.6:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.7.7 | cpe:2.3:a:sendmail:sendmail:8.7.7:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.7.8 | cpe:2.3:a:sendmail:sendmail:8.7.8:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.7.9 | cpe:2.3:a:sendmail:sendmail:8.7.9:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.7.10 | cpe:2.3:a:sendmail:sendmail:8.7.10:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.8.8 | cpe:2.3:a:sendmail:sendmail:8.8.8:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.9.0 | cpe:2.3:a:sendmail:sendmail:8.9.0:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.9.1 | cpe:2.3:a:sendmail:sendmail:8.9.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.9.2 | cpe:2.3:a:sendmail:sendmail:8.9.2:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.9.3 | cpe:2.3:a:sendmail:sendmail:8.9.3:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.10 | cpe:2.3:a:sendmail:sendmail:8.10:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.10.0 | cpe:2.3:a:sendmail:sendmail:8.10.0:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.10.1 | cpe:2.3:a:sendmail:sendmail:8.10.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.10.2 | cpe:2.3:a:sendmail:sendmail:8.10.2:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.0 | cpe:2.3:a:sendmail:sendmail:8.11.0:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.1 | cpe:2.3:a:sendmail:sendmail:8.11.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.2 | cpe:2.3:a:sendmail:sendmail:8.11.2:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.3 | cpe:2.3:a:sendmail:sendmail:8.11.3:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.4 | cpe:2.3:a:sendmail:sendmail:8.11.4:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.5 | cpe:2.3:a:sendmail:sendmail:8.11.5:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.6 | cpe:2.3:a:sendmail:sendmail:8.11.6:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.11.7 | cpe:2.3:a:sendmail:sendmail:8.11.7:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12 | cpe:2.3:a:sendmail:sendmail:8.12:beta10:*:*:*:*:*:* |
| sendmail | sendmail | 8.12 | cpe:2.3:a:sendmail:sendmail:8.12:beta12:*:*:*:*:*:* |
| sendmail | sendmail | 8.12 | cpe:2.3:a:sendmail:sendmail:8.12:beta16:*:*:*:*:*:* |
| sendmail | sendmail | 8.12 | cpe:2.3:a:sendmail:sendmail:8.12:beta5:*:*:*:*:*:* |
| sendmail | sendmail | 8.12 | cpe:2.3:a:sendmail:sendmail:8.12:beta7:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.0 | cpe:2.3:a:sendmail:sendmail:8.12.0:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.1 | cpe:2.3:a:sendmail:sendmail:8.12.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.2 | cpe:2.3:a:sendmail:sendmail:8.12.2:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.3 | cpe:2.3:a:sendmail:sendmail:8.12.3:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.4 | cpe:2.3:a:sendmail:sendmail:8.12.4:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.5 | cpe:2.3:a:sendmail:sendmail:8.12.5:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.6 | cpe:2.3:a:sendmail:sendmail:8.12.6:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.7 | cpe:2.3:a:sendmail:sendmail:8.12.7:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.8 | cpe:2.3:a:sendmail:sendmail:8.12.8:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.9 | cpe:2.3:a:sendmail:sendmail:8.12.9:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.12.10 | cpe:2.3:a:sendmail:sendmail:8.12.10:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.0 | cpe:2.3:a:sendmail:sendmail:8.13.0:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.1 | cpe:2.3:a:sendmail:sendmail:8.13.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.1.2 | cpe:2.3:a:sendmail:sendmail:8.13.1.2:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.2 | cpe:2.3:a:sendmail:sendmail:8.13.2:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.3 | cpe:2.3:a:sendmail:sendmail:8.13.3:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.4 | cpe:2.3:a:sendmail:sendmail:8.13.4:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.5 | cpe:2.3:a:sendmail:sendmail:8.13.5:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.6 | cpe:2.3:a:sendmail:sendmail:8.13.6:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.7 | cpe:2.3:a:sendmail:sendmail:8.13.7:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.13.8 | cpe:2.3:a:sendmail:sendmail:8.13.8:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.14.1 | cpe:2.3:a:sendmail:sendmail:8.14.1:*:*:*:*:*:*:* |
| sendmail | sendmail | 8.14.2 | cpe:2.3:a:sendmail:sendmail:8.14.2:*:*:*:*:*:*:* |