Answer in brief
CVE-2026-20182 records a Critical severity (CVSS 10.0) vulnerability in Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability. The current sources mark it as known exploited. The current feed maps Cisco/Cisco Catalyst SD-WAN Controller (generic), Cisco/Cisco Catalyst SD-WAN Manager (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 10.0. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Cisco/Cisco Catalyst SD-WAN Controller (generic), Cisco/Cisco Catalyst SD-WAN Manager (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:cisco:catalyst_sd-wan_manager:20.12.7:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:cisco:sd-wan_vbond_orchestrator:20.12.7:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:cisco:sd-wan_vsmart_controller:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:a:cisco:sd-wan_vsmart_controller:20.12.7:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Cisco/Cisco Catalyst SD-WAN Controllergeneric | 20.6.4 || 20.9.2 || 20.3.6 || 20.7.2 || 20.7.1 || 20.5.1 || 20.6.2 || 19.3.0 || 20.6.1 || 17.2.4 || 18.2.0 || 18.4.6 || 19.1.0 || 19.2.4 || 19.2.929 || 18.3.8 || 18.4.303 || 18.3.7 || 18.4.1 || 19.2.097 || 19.2.0 || 19.2.099 || 18.3.6 || 20.4.2 || 19.0.0 || 20.9.1 || 20.3.5 || 20.3.1 || 18.3.5 || 20.6.3 || 18.4.3 || 18.4.4 || 18.3.3 || 17.2.8 || 20.8.1 || 19.2.32 || 19.2.2 || 17.2.5 || 18.4.0 || 20.4.1.1 || 20.1.3 || 20.1.2 || 17.2.10 || 19.2.098 || 20.1.1 || 17.2.6 || 19.2.1 || 18.3.4 || 20.4.1 || 17.2.9 || 19.2.31 || 19.0.1a || 18.3.0 || 17.2.7 || 18.4.5 || 20.3.4 || 20.3.3 || 20.4.1.2 || 20.3.2 || 18.3.1 || 20.1.12 || 19.2.3 || 20.10.1 || 20.6.5 || 20.3.7 || 20.9.3 || 20.11.1 || 20.6.3.2 || 20.4.2.3 || 20.3.5.1 || 20.3.4.3 || 20.9.3.1 || 20.6.4.1 || 20.3.3.2 || 20.6.5.2 || 20.3.7.1 || 20.11.1.1 || 20.10.1.1 || 20.6.1.2 || 20.1.3.1 || 20.9.2.2 || 20.6.5.3 || 20.6.3.3 || 20.3.7.2 || 20.6.5.4 || 20.9.2.3 || 20.9.4 || 20.12.1 || 20.3.8 || 20.6.6 || 20.12.2 || 20.13.1 || 20.9.5 || 20.12.3 || 20.6.7 || 20.9.5.1 || 20.14.1 || 20.12.3.1 || 20.12.4 || 20.15.1 || 20.9.6 || 20.6.8 || 20.16.1 || 20.9.5.3 || 20.12.4.1 || 20.15.2 || 20.12.5 || 20.9.7 || 20.15.3 || 20.12.5.1 || 20.12.5.2 || 20.15.4 || 20.9.7.1 || 20.12.6 || 20.9.8 || 20.15.4.1 || 20.15.4.2 || 20.12.5.3 || 20.12.6.1 || 20.9.8.2 || 20.15.5 || 20.12.7 || 20.9.9 || 20.15.5.1 || 20.15.4.3 || 20.15.4.5 || 20.15.5.3 || 20.12.7.2 || 20.9.9.2 | Not reported |
| Cisco/Cisco Catalyst SD-WAN Managergeneric | 20.1.12 || 19.2.1 || 18.4.4 || 18.4.5 || 20.1.1.1 || 20.1.1 || 19.2.099 || 18.3.6 || 18.3.7 || 19.2.0 || 19.1.0 || 18.4.303 || 19.2.098 || 18.3.6.1 || 18.2.0 || 17.2.8 || 18.3.3.1 || 18.4.0 || 18.3.1 || 17.2.6 || 17.2.9 || 17.2.5 || 18.4.0.1 || 18.3.3 || 18.3.0 || 19.2.3 || 18.4.501_ES || 20.1.2 || 19.2.929 || 19.2.31 || 20.3.2 || 19.2.4 || 19.2.4.0.9 || 20.1.3.1 | Not reported |
Published upstream
May 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
May 14, 2026
Evidence: source:kev:kev:kev:recordMay 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, 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 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.
Quoted source text, attributed separately from HOL analysis.