GHSA-p83j-mxpw-gqpj · 深刻度： critical — May 2026: This security advisory provides the details and fix information for a vulnerability...
May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The section of this advisory includes Show Control Connections guidance to help with system checks. A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system. This vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to the affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.
総合評価: CVE-2026-20182 は在野悪用が確認された重大脅威（100/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 80.54%、99 パーセンタイル） 根拠: CISA KEV に登録（追加日 2026-05-14）。Cisco / Catalyst SD-WAN が対象で、認証バイパス（CWE-287）の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 直近 1 日で EPSS が +3.22% 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: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
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。
: Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability · CISA KEV の詳細
: 2026-05-14
: 2026-05-17
: Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlined in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
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 | 2026-06-01 | 77.32% | 80.54% | +3.22% |
| 2 | 2026-05-22 | 69.19% | 77.32% | +8.13% |
| 3 | 2026-05-21 | — | 69.19% | — |
EPSS の全履歴 （全 8 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 |
|---|---|---|---|---|---|---|
| 10.0 | 3.1 | CRITICAL |
|
3.9 | 6.0 | [email protected] |
GHSA-p83j-mxpw-gqpj · 深刻度： critical — May 2026: This security advisory provides the details and fix information for a vulnerability...
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| cisco | catalyst_sd-wan_manager | < 20.9.9.1 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
| cisco | catalyst_sd-wan_manager | >= 20.10, < 20.12.5.4 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
| cisco | catalyst_sd-wan_manager | >= 20.12.6, < 20.12.6.2 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
| cisco | catalyst_sd-wan_manager | >= 20.13, < 20.15.4.4 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
| cisco | catalyst_sd-wan_manager | >= 20.15.5, < 20.15.5.2 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
| cisco | catalyst_sd-wan_manager | >= 20.16, < 20.18.2.2 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
| cisco | catalyst_sd-wan_manager | >= 26.1, < 26.1.1.1 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* |
| cisco | catalyst_sd-wan_manager | 20.12.7 | cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.7:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | < 20.9.9.1 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | >= 20.10, < 20.12.5.4 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | >= 20.12.6, < 20.12.6.2 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | >= 20.13, < 20.15.4.4 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | >= 20.15.5, < 20.15.5.2 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | >= 20.16, < 20.18.2.2 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | >= 26.1, < 26.1.1.1 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* |
| cisco | sd-wan_vsmart_controller | 20.12.7 | cpe:2.3:a:cisco:sd-wan_vsmart_controller:20.12.7:*:*:*:*:*:*:* |