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10.0Kritisch KEV

CVE-2026-20127Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability

Cisco Cisco Catalyst SD-WAN Manager Veröffentlicht: (vor 8 Monaten)

Bekannt ausgenutzt — Cisco Catalyst SD-WAN Controller and Manager Authentication Bypass Vulnerability

CISA hat am 25.02.2026 bestätigt, dass diese Schwachstelle in echten Angriffen genutzt wird. Frist für US-Bundesbehörden: 27.02.2026.

Erforderliche Maßnahme: 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. CISA Mitigation Instructions: https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems ; https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk ; https://nvd.nist.gov/vuln/detail/CVE-2026-20127

Beschreibung

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. 

Schwachstellentyp (CWE): CWE-287

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
cisco catalyst sd-wan manager < 20.9.8.2
Cisco Cisco Catalyst SD-WAN Manager 20.1.12, 19.2.1, 18.4.4, 18.4.5, 20.1.1.1, 20.1.1, 19.3.0, 19.2.2, 19.2.099, 18.3.6, 18.3.7, 19.2.0, 18.3.8, 19.0.0, 19.1.0, 18.4.302, 18.4.303, 19.2.097, 19.2.098, 17.2.10, 18.3.6.1, 19.0.1a, 18.2.0, 18.4.3, 18.4.1, 17.2.8, 18.3.3.1, 18.4.0, 18.3.1, 17.2.6, 17.2.9, 18.3.4, 17.2.5, 18.3.1.1, 18.3.5, 18.4.0.1, 18.3.3, 17.2.7, 17.2.4, 18.3.0, 19.2.3, 18.4.501_ES, 20.3.1, 20.1.2, 19.2.929, 19.2.31, 20.3.2, 19.2.32, 20.3.2_925, 20.3.2.1, 20.3.2.1_927, 18.4.6, 20.1.2_937, 20.4.1, 20.3.2_928, 20.3.2_929, 20.4.1.0.1, 20.3.2.1_930, 19.2.4, 20.5.0.1.1, 20.4.1.1, 20.3.3, 19.2.4.0.1, 20.3.2_937, 20.3.3.1
cisco sd-wan vbond orchestrator < 20.9.8.2
cisco sd-wan vsmart controller < 20.9.8.2

Referenzen und Patches

CPE-Treffer (NVD) (15)
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* < 20.9.8.2
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* ≥ 20.11 < 20.12.5.3
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* ≥ 20.13 < 20.15.4.2
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* ≥ 20.16 < 20.18.2.1
  • cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.6:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:* < 20.9.8.2
  • cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:* ≥ 20.11 < 20.12.5.3
  • cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:* ≥ 20.13 < 20.15.4.2
  • cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:* ≥ 20.16 < 20.18.2.1
  • cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:20.12.6:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* < 20.9.8.2
  • cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* ≥ 20.11 < 20.12.5.3
  • cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* ≥ 20.13 < 20.15.4.2
  • cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* ≥ 20.16 < 20.18.2.1
  • cpe:2.3:a:cisco:sd-wan_vsmart_controller:20.12.6:*:*:*:*:*:*:*