A crafted message can cause the web server to crash with Pulse Secure Pulse Connect Secure (PCS) 8.3RX before 8.3R5 and Pulse Policy Secure 5.4RX before 5.4R5. This is not applicable to PCS 8.1RX.
総合評価: CVE-2018-20809 は中リスク（58.8/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 2.73%、84 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 | 3.31% | 2.73% | -0.59% |
| 2 | 2025-11-21 | 2.83% | 3.31% | +0.48% |
| 3 | 2025-11-18 | — | 2.83% | — |
EPSS の全履歴 （全 10 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 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| ivanti | connect_secure | 8.3 | cpe:2.3:a:ivanti:connect_secure:8.3:r1:*:*:*:*:*:* |
| ivanti | connect_secure | 8.3 | cpe:2.3:a:ivanti:connect_secure:8.3:r2:*:*:*:*:*:* |
| ivanti | connect_secure | 8.3 | cpe:2.3:a:ivanti:connect_secure:8.3:r2.1:*:*:*:*:*:* |
| ivanti | connect_secure | 8.3 | cpe:2.3:a:ivanti:connect_secure:8.3:r3:*:*:*:*:*:* |
| ivanti | connect_secure | 8.3 | cpe:2.3:a:ivanti:connect_secure:8.3:r4:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r1.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r1.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r10:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r11.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r12.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r13.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r13.2:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r13.3:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r130:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r2.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r3.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r4.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r5.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r6.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r7.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 4.4 | cpe:2.3:a:pulsesecure:pulse_policy_secure:4.4:r8.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r1.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r10.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r11.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r12.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r13.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r13.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r2.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r3.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r3.2:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r4.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r4.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r5.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r6.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r7.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r7.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r8.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r8.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.0 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.0:r9.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r1.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r1.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r10.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r11.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r12.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r12.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r13.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r14.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r2.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r2.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r3.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r3.2:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r4.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r5.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r6.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r7.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r8.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r9.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.1 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.1:r9.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r1.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r10.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r11.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r2.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r3.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r3.2:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r4.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r5.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r6.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r7.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r7.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r8.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r9.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.2 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.2:r9.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r1.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r1.1:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r10.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r11.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r12.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r2.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r3.0:*:*:*:*:*:* |
| pulsesecure | pulse_policy_secure | 5.3 | cpe:2.3:a:pulsesecure:pulse_policy_secure:5.3:r3.1:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA43877/ | Vendor Advisory |