Action not permitted
Modal body text goes here.
Modal Title
Modal Body
GHSA-P4CQ-46Q3-JR7W
Vulnerability from github – Published: 2026-02-25 18:31 – Updated: 2026-02-25 18:31
VLAI?
Details
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 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.
Severity ?
10.0 (Critical)
{
"affected": [],
"aliases": [
"CVE-2026-20127"
],
"database_specific": {
"cwe_ids": [
"CWE-287"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-25T17:25:29Z",
"severity": "CRITICAL"
},
"details": "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.\n\nThis 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\u0026nbsp;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.\u0026nbsp;",
"id": "GHSA-p4cq-46q3-jr7w",
"modified": "2026-02-25T18:31:38Z",
"published": "2026-02-25T18:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20127"
},
{
"type": "WEB",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
CVE-2026-20127 (GCVE-0-2026-20127)
Vulnerability from cvelistv5 – Published: 2026-02-25 16:14 – Updated: 2026-02-26 14:44
VLAI?
EPSS
Title
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
Summary
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 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.
Severity ?
10 (Critical)
CWE
- CWE-287 - Improper Authentication
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco Catalyst SD-WAN Manager |
Affected:
20.1.12
Affected: 19.2.1 Affected: 18.4.4 Affected: 18.4.5 Affected: 20.1.1.1 Affected: 20.1.1 Affected: 19.3.0 Affected: 19.2.2 Affected: 19.2.099 Affected: 18.3.6 Affected: 18.3.7 Affected: 19.2.0 Affected: 18.3.8 Affected: 19.0.0 Affected: 19.1.0 Affected: 18.4.302 Affected: 18.4.303 Affected: 19.2.097 Affected: 19.2.098 Affected: 17.2.10 Affected: 18.3.6.1 Affected: 19.0.1a Affected: 18.2.0 Affected: 18.4.3 Affected: 18.4.1 Affected: 17.2.8 Affected: 18.3.3.1 Affected: 18.4.0 Affected: 18.3.1 Affected: 17.2.6 Affected: 17.2.9 Affected: 18.3.4 Affected: 17.2.5 Affected: 18.3.1.1 Affected: 18.3.5 Affected: 18.4.0.1 Affected: 18.3.3 Affected: 17.2.7 Affected: 17.2.4 Affected: 18.3.0 Affected: 19.2.3 Affected: 18.4.501_ES Affected: 20.3.1 Affected: 20.1.2 Affected: 19.2.929 Affected: 19.2.31 Affected: 20.3.2 Affected: 19.2.32 Affected: 20.3.2_925 Affected: 20.3.2.1 Affected: 20.3.2.1_927 Affected: 18.4.6 Affected: 20.1.2_937 Affected: 20.4.1 Affected: 20.3.2_928 Affected: 20.3.2_929 Affected: 20.4.1.0.1 Affected: 20.3.2.1_930 Affected: 19.2.4 Affected: 20.5.0.1.1 Affected: 20.4.1.1 Affected: 20.3.3 Affected: 19.2.4.0.1 Affected: 20.3.2_937 Affected: 20.3.3.1 Affected: 20.5.1 Affected: 20.1.3 Affected: 20.3.3.0.4 Affected: 20.3.3.1.2 Affected: 20.3.3.1.1 Affected: 20.4.1.2 Affected: 20.3.3.0.2 Affected: 20.4.1.1.5 Affected: 20.4.1.0.01 Affected: 20.4.1.0.02 Affected: 20.3.3.1.7 Affected: 20.3.3.1.5 Affected: 20.5.1.0.1 Affected: 20.3.3.1.10 Affected: 20.3.3.0.8 Affected: 20.4.2 Affected: 20.4.2.0.1 Affected: 20.3.4 Affected: 20.3.3.0.14 Affected: 19.2.4.0.8 Affected: 19.2.4.0.9 Affected: 20.3.4.0.1 Affected: 20.3.2.0.5 Affected: 20.6.1 Affected: 20.5.1.0.2 Affected: 20.3.3.0.17 Affected: 20.6.1.1 Affected: 20.6.0.18.3 Affected: 20.3.2.0.6 Affected: 20.6.0.18.4 Affected: 20.4.2.0.2 Affected: 20.3.3.0.16 Affected: 20.3.4.0.5 Affected: 20.6.1.0.1 Affected: 20.3.4.0.6 Affected: 20.6.2 Affected: 20.7.1EFT2 Affected: 20.3.4.0.9 Affected: 20.3.4.0.11 Affected: 20.4.2.0.4 Affected: 20.3.3.0.18 Affected: 20.7.1 Affected: 20.6.2.1 Affected: 20.3.4.1 Affected: 20.5.1.1 Affected: 20.4.2.1 Affected: 20.4.2.1.1 Affected: 20.3.4.1.1 Affected: 20.3.813 Affected: 20.3.4.0.19 Affected: 20.4.2.2.1 Affected: 20.5.1.2 Affected: 20.3.4.2 Affected: 20.3.814 Affected: 20.4.2.2 Affected: 20.6.2.2 Affected: 20.3.4.2.1 Affected: 20.7.1.1 Affected: 20.3.4.1.2 Affected: 20.6.2.2.2 Affected: 20.3.4.0.20 Affected: 20.6.2.2.3 Affected: 20.4.2.2.2 Affected: 20.3.5 Affected: 20.6.2.0.4 Affected: 20.4.2.2.3 Affected: 20.3.4.0.24 Affected: 20.6.2.2.7 Affected: 20.6.3 Affected: 20.3.4.2.2 Affected: 20.4.2.2.4 Affected: 20.7.1.0.2 Affected: 20.8.1 Affected: 20.3.5.0.8 Affected: 20.3.5.0.9 Affected: 20.4.2.2.8 Affected: 20.3.5.0.7 Affected: 20.6.3.0.7 Affected: 20.6.3.0.5 Affected: 20.6.3.0.10 Affected: 20.6.3.0.2 Affected: 20.7.2 Affected: 20.9.1EFT2 Affected: 20.6.3.0.11 Affected: 20.6.3.1 Affected: 20.6.3.0.14 Affected: 20.6.4 Affected: 20.9.1 Affected: 20.6.3.0.19 Affected: 20.6.3.0.18 Affected: 20.3.6 Affected: 20.9.1.1 Affected: 20.6.3.0.23 Affected: 20.6.4.0.4 Affected: 20.6.3.0.25 Affected: 20.6.5 Affected: 20.6.3.0.27 Affected: 20.9.2 Affected: 20.9.2.1 Affected: 20.6.3.0.29 Affected: 20.6.3.0.31 Affected: 20.6.3.0.32 Affected: 20.10.1 Affected: 20.6.3.0.33 Affected: 20.9.2.0.01 Affected: 20.9.1_LI_Images Affected: 20.10.1_LI_Images Affected: 20.9.2_LI_Images Affected: 20.3.7 Affected: 20.9.3 Affected: 20.6.5.1 Affected: 20.11.1 Affected: 20.11.1_LI_Images Affected: 20.9.3_LI_ Images Affected: 20.6.3.1.1 Affected: 20.9.3.0.2 Affected: 20.6.5.1.2 Affected: 20.9.3.0.3 Affected: 20.4.2.3 Affected: 20.6.3.2 Affected: 20.6.4.1 Affected: 20.6.3.0.38 Affected: 20.6.3.0.39 Affected: 20.3.5.1 Affected: 20.3.4.3 Affected: 20.9.3.1 Affected: 20.3.3.2 Affected: 20.6.5.2 Affected: 20.3.7.1 Affected: 20.10.1.1 Affected: 20.6.5.2.1 Affected: 20.3.4.0.25 Affected: 20.6.2.2.4 Affected: 20.6.1.2 Affected: 20.11.1.1 Affected: 20.9.3.0.5 Affected: 20.3.4.0.26 Affected: 20.6.5.1.3 Affected: 20.6.3.0.40 Affected: 20.1.3.1 Affected: 20.9.2.2 Affected: 20.6.5.2.3 Affected: 20.6.5.1.4 Affected: 20.6.5.3 Affected: 20.6.3.0.41 Affected: 20.9.3.0.7 Affected: 20.6.5.1.5 Affected: 20.9.3.0.4 Affected: 20.6.4.0.19 Affected: 20.6.5.1.6 Affected: 20.9.3.0.8 Affected: 20.6.3.3 Affected: 20.3.7.2 Affected: 20.6.5.4 Affected: 20.6.5.1.7 Affected: 20.9.3.0.12 Affected: 20.6.4.2 Affected: 20.6.5.5 Affected: 20.9.3.2 Affected: 20.11.1.2 Affected: 20.6.3.4 Affected: 20.10.1.2 Affected: 20.6.5.1.9 Affected: 20.9.3.0.16 Affected: 20.6.3.0.45 Affected: 20.6.5.1.10 Affected: 20.9.3.0.17 Affected: 20.6.5.2.4 Affected: 20.6.4.0.21 Affected: 20.9.3.0.18 Affected: 20.6.3.0.46 Affected: 20.6.3.0.47 Affected: 20.9.2.3 Affected: 20.9.3.2_LI_Images Affected: 20.9.3.0.21 Affected: 20.9.3.0.20 Affected: 20.9.4_LI_Images Affected: 20.9.4 Affected: 20.6.5.1.11 Affected: 20.12.1 Affected: 20.12.1_LI_Images Affected: 20.6.5.1.13 Affected: 20.9.3.0.23 Affected: 20.6.5.2.8 Affected: 20.9.4.1 Affected: 20.9.4.1_LI_Images Affected: 20.9.3.0.25 Affected: 20.9.3.0.24 Affected: 20.6.5.1.14 Affected: 20.3.8 Affected: 20.6.6 Affected: 20.9.3.0.26 Affected: 20.6.3.0.51 Affected: 20.9.3.0.29 Affected: 20.12.2 Affected: 20.12.2_LI_Images Affected: 20.6.6.0.1 Affected: 20.13.1_LI_Images Affected: 20.9.4.0.4 Affected: 20.13.1 Affected: 20.9.4.1.1 Affected: 20.9.5 Affected: 20.9.5_LI_Images Affected: 20.12.3_LI_Images Affected: 20.12.3 Affected: 20.9.4.1.3 Affected: 20.6.7 Affected: 20.9.5.1 Affected: 20.9.5.1_LI_Images Affected: 20.9.4.1.6 Affected: 20.14.1 Affected: 20.14.1_LI_Images Affected: 20.9.5.2 Affected: 20.9.5.2.1 Affected: 20.9.5.2_LI_Images Affected: 20.12.3.1 Affected: 20.12.4 Affected: 20.15.1_LI_Images Affected: 20.15.1 Affected: 20.9.5.1.4 Affected: 20.9.5.2.7 Affected: 20.9.5.2.13 Affected: 20.9.6 Affected: 20.9.6_LI_Images Affected: 20.9.5.2.14 Affected: 20.6.8 Affected: 20.12.4.0.03 Affected: 20.16.1 Affected: 20.16.1_LI_Images Affected: 20.12.4_LI_Images Affected: 20.9.5.2.16 Affected: 20.12.4.0.4 Affected: 20.12.401 Affected: 20.9.5.3 Affected: 20.9.5.3_LI_Images Affected: 20.12.4.1_LI_Images Affected: 20.12.4.1 Affected: 20.9.5.2.21 Affected: 20.9.6.0.3 Affected: 20.12.4.0.6 Affected: 20.15.2_LI_Images Affected: 20.15.2 Affected: 20.12.4_Monthly_ES5 Affected: 20.12.5 Affected: 20.12.5_LI_Images Affected: 20.9.7_LI _Images Affected: 20.9.7 Affected: 20.15.3 Affected: 20.15.3_ LI _Images Affected: 20.12.501 Affected: 20.12.5.1_LI_Images Affected: 20.12.5.1 Affected: 20.12.5.2_LI_Images Affected: 20.12.5.2 Affected: 20.15.3.1 Affected: 20.15.4_LI_Images Affected: 20.15.4 Affected: 20.9.7.1_LI _Images Affected: 20.9.7.1 Affected: 20.18.1 Affected: 20.18.1_LI_Images Affected: 20.12.6_LI_Images Affected: 20.12.6 Affected: 20.12.5.1.01 Affected: 20.9.8 Affected: 20.9.8_LI_Images Affected: 20.18.2 Affected: 20.15.4.1_LI_Images Affected: 20.15.4.1 Affected: 20.18.2_LI_Images |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20127",
"options": [
{
"Exploitation": "active"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-26T04:55:54.782171Z",
"version": "2.0.3"
},
"type": "ssvc"
}
},
{
"other": {
"content": {
"dateAdded": "2026-02-25",
"reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127"
},
"type": "kev"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-26T14:44:06.050Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"government-resource"
],
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20127"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Catalyst SD-WAN Manager",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "20.1.12"
},
{
"status": "affected",
"version": "19.2.1"
},
{
"status": "affected",
"version": "18.4.4"
},
{
"status": "affected",
"version": "18.4.5"
},
{
"status": "affected",
"version": "20.1.1.1"
},
{
"status": "affected",
"version": "20.1.1"
},
{
"status": "affected",
"version": "19.3.0"
},
{
"status": "affected",
"version": "19.2.2"
},
{
"status": "affected",
"version": "19.2.099"
},
{
"status": "affected",
"version": "18.3.6"
},
{
"status": "affected",
"version": "18.3.7"
},
{
"status": "affected",
"version": "19.2.0"
},
{
"status": "affected",
"version": "18.3.8"
},
{
"status": "affected",
"version": "19.0.0"
},
{
"status": "affected",
"version": "19.1.0"
},
{
"status": "affected",
"version": "18.4.302"
},
{
"status": "affected",
"version": "18.4.303"
},
{
"status": "affected",
"version": "19.2.097"
},
{
"status": "affected",
"version": "19.2.098"
},
{
"status": "affected",
"version": "17.2.10"
},
{
"status": "affected",
"version": "18.3.6.1"
},
{
"status": "affected",
"version": "19.0.1a"
},
{
"status": "affected",
"version": "18.2.0"
},
{
"status": "affected",
"version": "18.4.3"
},
{
"status": "affected",
"version": "18.4.1"
},
{
"status": "affected",
"version": "17.2.8"
},
{
"status": "affected",
"version": "18.3.3.1"
},
{
"status": "affected",
"version": "18.4.0"
},
{
"status": "affected",
"version": "18.3.1"
},
{
"status": "affected",
"version": "17.2.6"
},
{
"status": "affected",
"version": "17.2.9"
},
{
"status": "affected",
"version": "18.3.4"
},
{
"status": "affected",
"version": "17.2.5"
},
{
"status": "affected",
"version": "18.3.1.1"
},
{
"status": "affected",
"version": "18.3.5"
},
{
"status": "affected",
"version": "18.4.0.1"
},
{
"status": "affected",
"version": "18.3.3"
},
{
"status": "affected",
"version": "17.2.7"
},
{
"status": "affected",
"version": "17.2.4"
},
{
"status": "affected",
"version": "18.3.0"
},
{
"status": "affected",
"version": "19.2.3"
},
{
"status": "affected",
"version": "18.4.501_ES"
},
{
"status": "affected",
"version": "20.3.1"
},
{
"status": "affected",
"version": "20.1.2"
},
{
"status": "affected",
"version": "19.2.929"
},
{
"status": "affected",
"version": "19.2.31"
},
{
"status": "affected",
"version": "20.3.2"
},
{
"status": "affected",
"version": "19.2.32"
},
{
"status": "affected",
"version": "20.3.2_925"
},
{
"status": "affected",
"version": "20.3.2.1"
},
{
"status": "affected",
"version": "20.3.2.1_927"
},
{
"status": "affected",
"version": "18.4.6"
},
{
"status": "affected",
"version": "20.1.2_937"
},
{
"status": "affected",
"version": "20.4.1"
},
{
"status": "affected",
"version": "20.3.2_928"
},
{
"status": "affected",
"version": "20.3.2_929"
},
{
"status": "affected",
"version": "20.4.1.0.1"
},
{
"status": "affected",
"version": "20.3.2.1_930"
},
{
"status": "affected",
"version": "19.2.4"
},
{
"status": "affected",
"version": "20.5.0.1.1"
},
{
"status": "affected",
"version": "20.4.1.1"
},
{
"status": "affected",
"version": "20.3.3"
},
{
"status": "affected",
"version": "19.2.4.0.1"
},
{
"status": "affected",
"version": "20.3.2_937"
},
{
"status": "affected",
"version": "20.3.3.1"
},
{
"status": "affected",
"version": "20.5.1"
},
{
"status": "affected",
"version": "20.1.3"
},
{
"status": "affected",
"version": "20.3.3.0.4"
},
{
"status": "affected",
"version": "20.3.3.1.2"
},
{
"status": "affected",
"version": "20.3.3.1.1"
},
{
"status": "affected",
"version": "20.4.1.2"
},
{
"status": "affected",
"version": "20.3.3.0.2"
},
{
"status": "affected",
"version": "20.4.1.1.5"
},
{
"status": "affected",
"version": "20.4.1.0.01"
},
{
"status": "affected",
"version": "20.4.1.0.02"
},
{
"status": "affected",
"version": "20.3.3.1.7"
},
{
"status": "affected",
"version": "20.3.3.1.5"
},
{
"status": "affected",
"version": "20.5.1.0.1"
},
{
"status": "affected",
"version": "20.3.3.1.10"
},
{
"status": "affected",
"version": "20.3.3.0.8"
},
{
"status": "affected",
"version": "20.4.2"
},
{
"status": "affected",
"version": "20.4.2.0.1"
},
{
"status": "affected",
"version": "20.3.4"
},
{
"status": "affected",
"version": "20.3.3.0.14"
},
{
"status": "affected",
"version": "19.2.4.0.8"
},
{
"status": "affected",
"version": "19.2.4.0.9"
},
{
"status": "affected",
"version": "20.3.4.0.1"
},
{
"status": "affected",
"version": "20.3.2.0.5"
},
{
"status": "affected",
"version": "20.6.1"
},
{
"status": "affected",
"version": "20.5.1.0.2"
},
{
"status": "affected",
"version": "20.3.3.0.17"
},
{
"status": "affected",
"version": "20.6.1.1"
},
{
"status": "affected",
"version": "20.6.0.18.3"
},
{
"status": "affected",
"version": "20.3.2.0.6"
},
{
"status": "affected",
"version": "20.6.0.18.4"
},
{
"status": "affected",
"version": "20.4.2.0.2"
},
{
"status": "affected",
"version": "20.3.3.0.16"
},
{
"status": "affected",
"version": "20.3.4.0.5"
},
{
"status": "affected",
"version": "20.6.1.0.1"
},
{
"status": "affected",
"version": "20.3.4.0.6"
},
{
"status": "affected",
"version": "20.6.2"
},
{
"status": "affected",
"version": "20.7.1EFT2"
},
{
"status": "affected",
"version": "20.3.4.0.9"
},
{
"status": "affected",
"version": "20.3.4.0.11"
},
{
"status": "affected",
"version": "20.4.2.0.4"
},
{
"status": "affected",
"version": "20.3.3.0.18"
},
{
"status": "affected",
"version": "20.7.1"
},
{
"status": "affected",
"version": "20.6.2.1"
},
{
"status": "affected",
"version": "20.3.4.1"
},
{
"status": "affected",
"version": "20.5.1.1"
},
{
"status": "affected",
"version": "20.4.2.1"
},
{
"status": "affected",
"version": "20.4.2.1.1"
},
{
"status": "affected",
"version": "20.3.4.1.1"
},
{
"status": "affected",
"version": "20.3.813"
},
{
"status": "affected",
"version": "20.3.4.0.19"
},
{
"status": "affected",
"version": "20.4.2.2.1"
},
{
"status": "affected",
"version": "20.5.1.2"
},
{
"status": "affected",
"version": "20.3.4.2"
},
{
"status": "affected",
"version": "20.3.814"
},
{
"status": "affected",
"version": "20.4.2.2"
},
{
"status": "affected",
"version": "20.6.2.2"
},
{
"status": "affected",
"version": "20.3.4.2.1"
},
{
"status": "affected",
"version": "20.7.1.1"
},
{
"status": "affected",
"version": "20.3.4.1.2"
},
{
"status": "affected",
"version": "20.6.2.2.2"
},
{
"status": "affected",
"version": "20.3.4.0.20"
},
{
"status": "affected",
"version": "20.6.2.2.3"
},
{
"status": "affected",
"version": "20.4.2.2.2"
},
{
"status": "affected",
"version": "20.3.5"
},
{
"status": "affected",
"version": "20.6.2.0.4"
},
{
"status": "affected",
"version": "20.4.2.2.3"
},
{
"status": "affected",
"version": "20.3.4.0.24"
},
{
"status": "affected",
"version": "20.6.2.2.7"
},
{
"status": "affected",
"version": "20.6.3"
},
{
"status": "affected",
"version": "20.3.4.2.2"
},
{
"status": "affected",
"version": "20.4.2.2.4"
},
{
"status": "affected",
"version": "20.7.1.0.2"
},
{
"status": "affected",
"version": "20.8.1"
},
{
"status": "affected",
"version": "20.3.5.0.8"
},
{
"status": "affected",
"version": "20.3.5.0.9"
},
{
"status": "affected",
"version": "20.4.2.2.8"
},
{
"status": "affected",
"version": "20.3.5.0.7"
},
{
"status": "affected",
"version": "20.6.3.0.7"
},
{
"status": "affected",
"version": "20.6.3.0.5"
},
{
"status": "affected",
"version": "20.6.3.0.10"
},
{
"status": "affected",
"version": "20.6.3.0.2"
},
{
"status": "affected",
"version": "20.7.2"
},
{
"status": "affected",
"version": "20.9.1EFT2"
},
{
"status": "affected",
"version": "20.6.3.0.11"
},
{
"status": "affected",
"version": "20.6.3.1"
},
{
"status": "affected",
"version": "20.6.3.0.14"
},
{
"status": "affected",
"version": "20.6.4"
},
{
"status": "affected",
"version": "20.9.1"
},
{
"status": "affected",
"version": "20.6.3.0.19"
},
{
"status": "affected",
"version": "20.6.3.0.18"
},
{
"status": "affected",
"version": "20.3.6"
},
{
"status": "affected",
"version": "20.9.1.1"
},
{
"status": "affected",
"version": "20.6.3.0.23"
},
{
"status": "affected",
"version": "20.6.4.0.4"
},
{
"status": "affected",
"version": "20.6.3.0.25"
},
{
"status": "affected",
"version": "20.6.5"
},
{
"status": "affected",
"version": "20.6.3.0.27"
},
{
"status": "affected",
"version": "20.9.2"
},
{
"status": "affected",
"version": "20.9.2.1"
},
{
"status": "affected",
"version": "20.6.3.0.29"
},
{
"status": "affected",
"version": "20.6.3.0.31"
},
{
"status": "affected",
"version": "20.6.3.0.32"
},
{
"status": "affected",
"version": "20.10.1"
},
{
"status": "affected",
"version": "20.6.3.0.33"
},
{
"status": "affected",
"version": "20.9.2.0.01"
},
{
"status": "affected",
"version": "20.9.1_LI_Images"
},
{
"status": "affected",
"version": "20.10.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.2_LI_Images"
},
{
"status": "affected",
"version": "20.3.7"
},
{
"status": "affected",
"version": "20.9.3"
},
{
"status": "affected",
"version": "20.6.5.1"
},
{
"status": "affected",
"version": "20.11.1"
},
{
"status": "affected",
"version": "20.11.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.3_LI_ Images"
},
{
"status": "affected",
"version": "20.6.3.1.1"
},
{
"status": "affected",
"version": "20.9.3.0.2"
},
{
"status": "affected",
"version": "20.6.5.1.2"
},
{
"status": "affected",
"version": "20.9.3.0.3"
},
{
"status": "affected",
"version": "20.4.2.3"
},
{
"status": "affected",
"version": "20.6.3.2"
},
{
"status": "affected",
"version": "20.6.4.1"
},
{
"status": "affected",
"version": "20.6.3.0.38"
},
{
"status": "affected",
"version": "20.6.3.0.39"
},
{
"status": "affected",
"version": "20.3.5.1"
},
{
"status": "affected",
"version": "20.3.4.3"
},
{
"status": "affected",
"version": "20.9.3.1"
},
{
"status": "affected",
"version": "20.3.3.2"
},
{
"status": "affected",
"version": "20.6.5.2"
},
{
"status": "affected",
"version": "20.3.7.1"
},
{
"status": "affected",
"version": "20.10.1.1"
},
{
"status": "affected",
"version": "20.6.5.2.1"
},
{
"status": "affected",
"version": "20.3.4.0.25"
},
{
"status": "affected",
"version": "20.6.2.2.4"
},
{
"status": "affected",
"version": "20.6.1.2"
},
{
"status": "affected",
"version": "20.11.1.1"
},
{
"status": "affected",
"version": "20.9.3.0.5"
},
{
"status": "affected",
"version": "20.3.4.0.26"
},
{
"status": "affected",
"version": "20.6.5.1.3"
},
{
"status": "affected",
"version": "20.6.3.0.40"
},
{
"status": "affected",
"version": "20.1.3.1"
},
{
"status": "affected",
"version": "20.9.2.2"
},
{
"status": "affected",
"version": "20.6.5.2.3"
},
{
"status": "affected",
"version": "20.6.5.1.4"
},
{
"status": "affected",
"version": "20.6.5.3"
},
{
"status": "affected",
"version": "20.6.3.0.41"
},
{
"status": "affected",
"version": "20.9.3.0.7"
},
{
"status": "affected",
"version": "20.6.5.1.5"
},
{
"status": "affected",
"version": "20.9.3.0.4"
},
{
"status": "affected",
"version": "20.6.4.0.19"
},
{
"status": "affected",
"version": "20.6.5.1.6"
},
{
"status": "affected",
"version": "20.9.3.0.8"
},
{
"status": "affected",
"version": "20.6.3.3"
},
{
"status": "affected",
"version": "20.3.7.2"
},
{
"status": "affected",
"version": "20.6.5.4"
},
{
"status": "affected",
"version": "20.6.5.1.7"
},
{
"status": "affected",
"version": "20.9.3.0.12"
},
{
"status": "affected",
"version": "20.6.4.2"
},
{
"status": "affected",
"version": "20.6.5.5"
},
{
"status": "affected",
"version": "20.9.3.2"
},
{
"status": "affected",
"version": "20.11.1.2"
},
{
"status": "affected",
"version": "20.6.3.4"
},
{
"status": "affected",
"version": "20.10.1.2"
},
{
"status": "affected",
"version": "20.6.5.1.9"
},
{
"status": "affected",
"version": "20.9.3.0.16"
},
{
"status": "affected",
"version": "20.6.3.0.45"
},
{
"status": "affected",
"version": "20.6.5.1.10"
},
{
"status": "affected",
"version": "20.9.3.0.17"
},
{
"status": "affected",
"version": "20.6.5.2.4"
},
{
"status": "affected",
"version": "20.6.4.0.21"
},
{
"status": "affected",
"version": "20.9.3.0.18"
},
{
"status": "affected",
"version": "20.6.3.0.46"
},
{
"status": "affected",
"version": "20.6.3.0.47"
},
{
"status": "affected",
"version": "20.9.2.3"
},
{
"status": "affected",
"version": "20.9.3.2_LI_Images"
},
{
"status": "affected",
"version": "20.9.3.0.21"
},
{
"status": "affected",
"version": "20.9.3.0.20"
},
{
"status": "affected",
"version": "20.9.4_LI_Images"
},
{
"status": "affected",
"version": "20.9.4"
},
{
"status": "affected",
"version": "20.6.5.1.11"
},
{
"status": "affected",
"version": "20.12.1"
},
{
"status": "affected",
"version": "20.12.1_LI_Images"
},
{
"status": "affected",
"version": "20.6.5.1.13"
},
{
"status": "affected",
"version": "20.9.3.0.23"
},
{
"status": "affected",
"version": "20.6.5.2.8"
},
{
"status": "affected",
"version": "20.9.4.1"
},
{
"status": "affected",
"version": "20.9.4.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.3.0.25"
},
{
"status": "affected",
"version": "20.9.3.0.24"
},
{
"status": "affected",
"version": "20.6.5.1.14"
},
{
"status": "affected",
"version": "20.3.8"
},
{
"status": "affected",
"version": "20.6.6"
},
{
"status": "affected",
"version": "20.9.3.0.26"
},
{
"status": "affected",
"version": "20.6.3.0.51"
},
{
"status": "affected",
"version": "20.9.3.0.29"
},
{
"status": "affected",
"version": "20.12.2"
},
{
"status": "affected",
"version": "20.12.2_LI_Images"
},
{
"status": "affected",
"version": "20.6.6.0.1"
},
{
"status": "affected",
"version": "20.13.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.4.0.4"
},
{
"status": "affected",
"version": "20.13.1"
},
{
"status": "affected",
"version": "20.9.4.1.1"
},
{
"status": "affected",
"version": "20.9.5"
},
{
"status": "affected",
"version": "20.9.5_LI_Images"
},
{
"status": "affected",
"version": "20.12.3_LI_Images"
},
{
"status": "affected",
"version": "20.12.3"
},
{
"status": "affected",
"version": "20.9.4.1.3"
},
{
"status": "affected",
"version": "20.6.7"
},
{
"status": "affected",
"version": "20.9.5.1"
},
{
"status": "affected",
"version": "20.9.5.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.4.1.6"
},
{
"status": "affected",
"version": "20.14.1"
},
{
"status": "affected",
"version": "20.14.1_LI_Images"
},
{
"status": "affected",
"version": "20.9.5.2"
},
{
"status": "affected",
"version": "20.9.5.2.1"
},
{
"status": "affected",
"version": "20.9.5.2_LI_Images"
},
{
"status": "affected",
"version": "20.12.3.1"
},
{
"status": "affected",
"version": "20.12.4"
},
{
"status": "affected",
"version": "20.15.1_LI_Images"
},
{
"status": "affected",
"version": "20.15.1"
},
{
"status": "affected",
"version": "20.9.5.1.4"
},
{
"status": "affected",
"version": "20.9.5.2.7"
},
{
"status": "affected",
"version": "20.9.5.2.13"
},
{
"status": "affected",
"version": "20.9.6"
},
{
"status": "affected",
"version": "20.9.6_LI_Images"
},
{
"status": "affected",
"version": "20.9.5.2.14"
},
{
"status": "affected",
"version": "20.6.8"
},
{
"status": "affected",
"version": "20.12.4.0.03"
},
{
"status": "affected",
"version": "20.16.1"
},
{
"status": "affected",
"version": "20.16.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.4_LI_Images"
},
{
"status": "affected",
"version": "20.9.5.2.16"
},
{
"status": "affected",
"version": "20.12.4.0.4"
},
{
"status": "affected",
"version": "20.12.401"
},
{
"status": "affected",
"version": "20.9.5.3"
},
{
"status": "affected",
"version": "20.9.5.3_LI_Images"
},
{
"status": "affected",
"version": "20.12.4.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.4.1"
},
{
"status": "affected",
"version": "20.9.5.2.21"
},
{
"status": "affected",
"version": "20.9.6.0.3"
},
{
"status": "affected",
"version": "20.12.4.0.6"
},
{
"status": "affected",
"version": "20.15.2_LI_Images"
},
{
"status": "affected",
"version": "20.15.2"
},
{
"status": "affected",
"version": "20.12.4_Monthly_ES5"
},
{
"status": "affected",
"version": "20.12.5"
},
{
"status": "affected",
"version": "20.12.5_LI_Images"
},
{
"status": "affected",
"version": "20.9.7_LI _Images"
},
{
"status": "affected",
"version": "20.9.7"
},
{
"status": "affected",
"version": "20.15.3"
},
{
"status": "affected",
"version": "20.15.3_ LI _Images"
},
{
"status": "affected",
"version": "20.12.501"
},
{
"status": "affected",
"version": "20.12.5.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.1"
},
{
"status": "affected",
"version": "20.12.5.2_LI_Images"
},
{
"status": "affected",
"version": "20.12.5.2"
},
{
"status": "affected",
"version": "20.15.3.1"
},
{
"status": "affected",
"version": "20.15.4_LI_Images"
},
{
"status": "affected",
"version": "20.15.4"
},
{
"status": "affected",
"version": "20.9.7.1_LI _Images"
},
{
"status": "affected",
"version": "20.9.7.1"
},
{
"status": "affected",
"version": "20.18.1"
},
{
"status": "affected",
"version": "20.18.1_LI_Images"
},
{
"status": "affected",
"version": "20.12.6_LI_Images"
},
{
"status": "affected",
"version": "20.12.6"
},
{
"status": "affected",
"version": "20.12.5.1.01"
},
{
"status": "affected",
"version": "20.9.8"
},
{
"status": "affected",
"version": "20.9.8_LI_Images"
},
{
"status": "affected",
"version": "20.18.2"
},
{
"status": "affected",
"version": "20.15.4.1_LI_Images"
},
{
"status": "affected",
"version": "20.15.4.1"
},
{
"status": "affected",
"version": "20.18.2_LI_Images"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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.\r\n\r\nThis 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\u0026nbsp;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.\u0026nbsp;"
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is aware of limited exploitation of this vulnerability. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 10,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "Improper Authentication",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-25T16:18:10.274Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-sdwan-rpa-EHchtZk",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk"
}
],
"source": {
"advisory": "cisco-sa-sdwan-rpa-EHchtZk",
"defects": [
"CSCws52722"
],
"discovery": "INTERNAL"
},
"title": "Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20127",
"datePublished": "2026-02-25T16:14:20.137Z",
"dateReserved": "2025-10-08T11:59:15.379Z",
"dateUpdated": "2026-02-26T14:44:06.050Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…