Exploitation evidence
Known exploited · CISA KEV listed
Added 2026-05-14. Ransomware campaign use: Unknown.
CISA required action: 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.
CISA due date: 2026-05-17. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Cisco / Cisco Catalyst SD-WAN Controller
Default status: unknown
- affected: 20.6.4
- affected: 20.9.2
- affected: 20.3.6
- affected: 20.7.2
- affected: 20.7.1
- affected: 20.5.1
- affected: 20.6.2
- affected: 19.3.0
- affected: 20.6.1
- affected: 17.2.4
- affected: 18.2.0
- affected: 18.4.6
- affected: 19.1.0
- affected: 19.2.4
- affected: 19.2.929
- affected: 18.3.8
- affected: 18.4.303
- affected: 18.3.7
- affected: 18.4.1
- affected: 19.2.097
- affected: 19.2.0
- affected: 19.2.099
- affected: 18.3.6
- affected: 20.4.2
- affected: 19.0.0
- affected: 20.9.1
- affected: 20.3.5
- affected: 20.3.1
- affected: 18.3.5
- affected: 20.6.3
- affected: 18.4.3
- affected: 18.4.4
- affected: 18.3.3
- affected: 17.2.8
- affected: 20.8.1
- affected: 19.2.32
- affected: 19.2.2
- affected: 17.2.5
- affected: 18.4.0
- affected: 20.4.1.1
- affected: 20.1.3
- affected: 20.1.2
- affected: 17.2.10
- affected: 19.2.098
- affected: 20.1.1
- affected: 17.2.6
- affected: 19.2.1
- affected: 18.3.4
- affected: 20.4.1
- affected: 17.2.9
- affected: 19.2.31
- affected: 19.0.1a
- affected: 18.3.0
- affected: 17.2.7
- affected: 18.4.5
- affected: 20.3.4
- affected: 20.3.3
- affected: 20.4.1.2
- affected: 20.3.2
- affected: 18.3.1
- affected: 20.1.12
- affected: 19.2.3
- affected: 20.10.1
- affected: 20.6.5
- affected: 20.3.7
- affected: 20.9.3
- affected: 20.11.1
- affected: 20.6.3.2
- affected: 20.4.2.3
- affected: 20.3.5.1
- affected: 20.3.4.3
- affected: 20.9.3.1
- affected: 20.6.4.1
- affected: 20.3.3.2
- affected: 20.6.5.2
- affected: 20.3.7.1
- affected: 20.11.1.1
- affected: 20.10.1.1
- affected: 20.6.1.2
- affected: 20.1.3.1
- affected: 20.9.2.2
- affected: 20.6.5.3
- affected: 20.6.3.3
- affected: 20.3.7.2
- affected: 20.6.5.4
- affected: 20.9.2.3
- affected: 20.9.4
- affected: 20.12.1
- affected: 20.3.8
- affected: 20.6.6
- affected: 20.12.2
- affected: 20.13.1
- affected: 20.9.5
- affected: 20.12.3
- affected: 20.6.7
- affected: 20.9.5.1
- affected: 20.14.1
- affected: 20.12.3.1
- affected: 20.12.4
- affected: 20.15.1
- affected: 20.9.6
- affected: 20.6.8
- affected: 20.16.1
- affected: 20.9.5.3
- affected: 20.12.4.1
- affected: 20.15.2
- affected: 20.12.5
- affected: 20.9.7
- affected: 20.15.3
- affected: 20.12.5.1
- affected: 20.12.5.2
- affected: 20.15.4
- affected: 20.9.7.1
- affected: 20.12.6
- affected: 20.9.8
- affected: 20.15.4.1
- affected: 20.15.4.2
- affected: 20.12.5.3
- affected: 20.12.6.1
- affected: 20.9.8.2
- affected: 20.15.5
- affected: 20.12.7
- affected: 20.9.9
- affected: 20.15.5.1
- affected: 20.15.4.3
- affected: 20.15.4.5
- affected: 20.15.5.3
- affected: 20.12.7.2
- affected: 20.9.9.2
Cisco / Cisco Catalyst SD-WAN Manager
Default status: unknown
- 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: 19.2.099
- affected: 18.3.6
- affected: 18.3.7
- affected: 19.2.0
- affected: 19.1.0
- affected: 18.4.303
- affected: 19.2.098
- affected: 18.3.6.1
- affected: 18.2.0
- 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: 17.2.5
- affected: 18.4.0.1
- affected: 18.3.3
- affected: 18.3.0
- affected: 19.2.3
- affected: 18.4.501_ES
- affected: 20.1.2
- affected: 19.2.929
- affected: 19.2.31
- affected: 20.3.2
- affected: 19.2.4
- affected: 19.2.4.0.9
- affected: 20.1.3.1
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.91091,
"percentile": 0.99812
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.91817,
"percentile": 0.99818
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.91817,
"percentile": 0.99817
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.91817,
"percentile": 0.99817
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.91817,
"percentile": 0.99817
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.91817,
"percentile": 0.99817
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.91817,
"percentile": 0.99817
}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.91817,
"percentile": 0.99817
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.91817,
"percentile": 0.99816
}03 Nov 2026, 12:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
{
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{
"status": "affected",
"version": "20.1.2"
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{
"status": "affected",
"version": "17.2.10"
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{
"status": "affected",
"version": "19.2.098"
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
"status": "affected",
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{
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"status": "affected",
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{
"status": "affected",
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{
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}
],
"descriptions": [
{
"lang": "en",
"value": "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. \r\n\r\nA 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.\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 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."
}
],
"exploits": [
{
"lang": "en",
"value": "In May 2026, the Cisco Product Security Incident Response Team (PSIRT) became aware of limited exploitation of this vulnerability. Cisco strongly recommends 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"
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"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "Improper Authentication",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-16T17:57:59.048Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-sdwan-rpa2-v69WY2SW",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa2-v69WY2SW"
},
{
"name": "Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability</a> was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The <a href=\"#IOC\">Indicators of Compromise",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk"
}
],
"source": {
"advisory": "cisco-sa-sdwan-rpa2-v69WY2SW",
"defects": [
"CSCwt50498"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20182",
"datePublished": "2026-05-14T16:08:25.566Z",
"dateReserved": "2025-10-08T11:59:15.393Z",
"dateUpdated": "2026-06-16T17:57:59.048Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.91817,
"percentile": 0.99816
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2026-20182",
"cwes": [
"CWE-287"
],
"dateAdded": "2026-05-14",
"dueDate": "2026-05-17",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "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-rpa2-v69WY2SW ; https://nvd.nist.gov/vuln/detail/CVE-2026-20182",
"product": "Catalyst SD-WAN",
"requiredAction": "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.",
"shortDescription": "Cisco Catalyst SD-WAN Controller & Manager contain an authentication bypass vulnerability that allows an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.",
"vendorProject": "Cisco",
"vulnerabilityName": "Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability"
}