Cisco · Catalyst SD-WAN Controller and Manager
CVE-2026-20127
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
ما هي
A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, 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 an 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.
CISA: Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, and Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, contain an authentication bypass vulnerability 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 an 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.
ما العمل
Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines 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.
الموعد النهائي للوكالات الفدرالية الأمريكية: 27 فبراير 2026
ثغرات مُستغلّة أخرى من Cisco
| أُضيفت | الثغرة | المنتج | الخطورة | احتمال الهجوم |
|---|---|---|---|---|
| 14/10/2026 | Relative Path Traversal | Secure Email Gateway | حرجة 9.8 | 2.2% |
| 30/09/2026 | Hex Encoding | Catalyst SD-WAN Manager | حرجة 9.8 | 39% |
| 16/09/2026 | Incorrect Use of Privileged APIs | Identity Services Engine | حرجة 10.0 | 76% |
| 14/09/2026 | SQL Injection | Secure Email Gateway | حرجة 9.8 | 30% |
| 09/09/2026 | Firewall Management Center Authentication Bypass Using an Alternate Path or Channel | Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management | حرجة 10.0 | 88% |
| 11/08/2026 | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) | مرتفع 8.6 | 1.0% |
| 29/07/2026 | Secure Firewall Management Center Use of Hard-coded Password | Secure Firewall Management Center (FMC) | متوسطة 5.3 | 35% |
| 13/07/2026 | Cross-Site Request Forgery | IOS | مرتفع 8.1 | 34% |
المصادر: Known Exploited Vulnerabilities (CISA، ملكية عامة)، وCVE records (cve.org)، وEPSS (FIRST). احتمال الهجوم هو تقدير EPSS لاحتمال أن يحاول أحد استغلال الثغرة خلال الأيام الـ30 القادمة.