CVE-2026-20210 (GCVE-0-2026-20210)
Vulnerability from cvelistv5
Published
2026-05-14 16:08
Modified
2026-05-15 03:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-779 - Logging of Excessive Data
Summary
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system.
This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco Catalyst SD-WAN Manager |
Version: 20.1.12 Version: 19.2.1 Version: 18.4.4 Version: 18.4.5 Version: 20.1.1.1 Version: 20.1.1 Version: 19.3.0 Version: 19.2.2 Version: 19.2.099 Version: 18.3.6 Version: 18.3.7 Version: 19.2.0 Version: 18.3.8 Version: 19.0.0 Version: 19.1.0 Version: 18.4.302 Version: 18.4.303 Version: 19.2.097 Version: 19.2.098 Version: 17.2.10 Version: 18.3.6.1 Version: 19.0.1a Version: 18.2.0 Version: 18.4.3 Version: 18.4.1 Version: 17.2.8 Version: 18.3.3.1 Version: 18.4.0 Version: 18.3.1 Version: 17.2.6 Version: 17.2.9 Version: 18.3.4 Version: 17.2.5 Version: 18.3.1.1 Version: 18.3.5 Version: 18.4.0.1 Version: 18.3.3 Version: 17.2.7 Version: 17.2.4 Version: 18.3.0 Version: 19.2.3 Version: 18.4.501_ES Version: 20.3.1 Version: 20.1.2 Version: 19.2.929 Version: 19.2.31 Version: 20.3.2 Version: 19.2.32 Version: 20.3.2_925 Version: 20.3.2.1 Version: 20.3.2.1_927 Version: 18.4.6 Version: 20.1.2_937 Version: 20.4.1 Version: 20.3.2_928 Version: 20.3.2_929 Version: 20.4.1.0.1 Version: 20.3.2.1_930 Version: 19.2.4 Version: 20.5.0.1.1 Version: 20.4.1.1 Version: 20.3.3 Version: 19.2.4.0.1 Version: 20.3.2_937 Version: 20.3.3.1 Version: 20.5.1 Version: 20.1.3 Version: 20.3.3.0.4 Version: 20.3.3.1.2 Version: 20.3.3.1.1 Version: 20.4.1.2 Version: 20.3.3.0.2 Version: 20.4.1.1.5 Version: 20.4.1.0.01 Version: 20.4.1.0.02 Version: 20.3.3.1.7 Version: 20.3.3.1.5 Version: 20.5.1.0.1 Version: 20.3.3.1.10 Version: 20.3.3.0.8 Version: 20.4.2 Version: 20.4.2.0.1 Version: 20.3.4 Version: 20.3.3.0.14 Version: 19.2.4.0.8 Version: 19.2.4.0.9 Version: 20.3.4.0.1 Version: 20.3.2.0.5 Version: 20.6.1 Version: 20.5.1.0.2 Version: 20.3.3.0.17 Version: 20.6.1.1 Version: 20.6.0.18.3 Version: 20.3.2.0.6 Version: 20.6.0.18.4 Version: 20.4.2.0.2 Version: 20.3.3.0.16 Version: 20.3.4.0.5 Version: 20.6.1.0.1 Version: 20.3.4.0.6 Version: 20.6.2 Version: 20.7.1EFT2 Version: 20.3.4.0.9 Version: 20.3.4.0.11 Version: 20.4.2.0.4 Version: 20.3.3.0.18 Version: 20.7.1 Version: 20.6.2.1 Version: 20.3.4.1 Version: 20.5.1.1 Version: 20.4.2.1 Version: 20.4.2.1.1 Version: 20.3.4.1.1 Version: 20.3.813 Version: 20.3.4.0.19 Version: 20.4.2.2.1 Version: 20.5.1.2 Version: 20.3.4.2 Version: 20.3.814 Version: 20.4.2.2 Version: 20.6.2.2 Version: 20.3.4.2.1 Version: 20.7.1.1 Version: 20.3.4.1.2 Version: 20.6.2.2.2 Version: 20.3.4.0.20 Version: 20.6.2.2.3 Version: 20.4.2.2.2 Version: 20.3.5 Version: 20.6.2.0.4 Version: 20.4.2.2.3 Version: 20.3.4.0.24 Version: 20.6.2.2.7 Version: 20.6.3 Version: 20.3.4.2.2 Version: 20.4.2.2.4 Version: 20.7.1.0.2 Version: 20.8.1 Version: 20.3.5.0.8 Version: 20.3.5.0.9 Version: 20.4.2.2.8 Version: 20.3.5.0.7 Version: 20.6.3.0.7 Version: 20.6.3.0.5 Version: 20.6.3.0.10 Version: 20.6.3.0.2 Version: 20.7.2 Version: 20.9.1EFT2 Version: 20.6.3.0.11 Version: 20.6.3.1 Version: 20.6.3.0.14 Version: 20.6.4 Version: 20.9.1 Version: 20.6.3.0.19 Version: 20.6.3.0.18 Version: 20.3.6 Version: 20.9.1.1 Version: 20.6.3.0.23 Version: 20.6.4.0.4 Version: 20.6.3.0.25 Version: 20.6.5 Version: 20.6.3.0.27 Version: 20.9.2 Version: 20.9.2.1 Version: 20.6.3.0.29 Version: 20.6.3.0.31 Version: 20.6.3.0.32 Version: 20.10.1 Version: 20.6.3.0.33 Version: 20.9.2.0.01 Version: 20.9.1_LI_Images Version: 20.10.1_LI_Images Version: 20.9.2_LI_Images Version: 20.3.7 Version: 20.9.3 Version: 20.6.5.1 Version: 20.11.1 Version: 20.11.1_LI_Images Version: 20.9.3_LI_ Images Version: 20.6.3.1.1 Version: 20.9.3.0.2 Version: 20.6.5.1.2 Version: 20.9.3.0.3 Version: 20.4.2.3 Version: 20.6.3.2 Version: 20.6.4.1 Version: 20.6.3.0.38 Version: 20.6.3.0.39 Version: 20.3.5.1 Version: 20.3.4.3 Version: 20.9.3.1 Version: 20.3.3.2 Version: 20.6.5.2 Version: 20.3.7.1 Version: 20.10.1.1 Version: 20.6.5.2.1 Version: 20.3.4.0.25 Version: 20.6.2.2.4 Version: 20.6.1.2 Version: 20.11.1.1 Version: 20.9.3.0.5 Version: 20.3.4.0.26 Version: 20.6.5.1.3 Version: 20.6.3.0.40 Version: 20.1.3.1 Version: 20.9.2.2 Version: 20.6.5.2.3 Version: 20.6.5.1.4 Version: 20.6.5.3 Version: 20.6.3.0.41 Version: 20.9.3.0.7 Version: 20.6.5.1.5 Version: 20.9.3.0.4 Version: 20.6.4.0.19 Version: 20.6.5.1.6 Version: 20.9.3.0.8 Version: 20.6.3.3 Version: 20.3.7.2 Version: 20.6.5.4 Version: 20.6.5.1.7 Version: 20.9.3.0.12 Version: 20.6.4.2 Version: 20.6.5.5 Version: 20.9.3.2 Version: 20.11.1.2 Version: 20.6.3.4 Version: 20.10.1.2 Version: 20.6.5.1.9 Version: 20.9.3.0.16 Version: 20.6.3.0.45 Version: 20.6.5.1.10 Version: 20.9.3.0.17 Version: 20.6.5.2.4 Version: 20.6.4.0.21 Version: 20.9.3.0.18 Version: 20.6.3.0.46 Version: 20.6.3.0.47 Version: 20.9.2.3 Version: 20.9.3.2_LI_Images Version: 20.9.3.0.21 Version: 20.9.3.0.20 Version: 20.9.4_LI_Images Version: 20.9.4 Version: 20.6.5.1.11 Version: 20.12.1 Version: 20.12.1_LI_Images Version: 20.6.5.1.13 Version: 20.9.3.0.23 Version: 20.6.5.2.8 Version: 20.9.4.1 Version: 20.9.4.1_LI_Images Version: 20.9.3.0.25 Version: 20.9.3.0.24 Version: 20.6.5.1.14 Version: 20.3.8 Version: 20.6.6 Version: 20.9.3.0.26 Version: 20.6.3.0.51 Version: 20.9.3.0.29 Version: 20.12.2 Version: 20.12.2_LI_Images Version: 20.6.6.0.1 Version: 20.13.1_LI_Images Version: 20.9.4.0.4 Version: 20.13.1 Version: 20.9.4.1.1 Version: 20.9.5 Version: 20.9.5_LI_Images Version: 20.12.3_LI_Images Version: 20.12.3 Version: 20.9.4.1.3 Version: 20.6.7 Version: 20.9.5.1 Version: 20.9.5.1_LI_Images Version: 20.9.4.1.6 Version: 20.14.1 Version: 20.14.1_LI_Images Version: 20.9.5.2 Version: 20.9.5.2.1 Version: 20.9.5.2_LI_Images Version: 20.12.3.1 Version: 20.12.4 Version: 20.15.1_LI_Images Version: 20.15.1 Version: 20.9.5.1.4 Version: 20.9.5.2.7 Version: 20.9.5.2.13 Version: 20.9.6 Version: 20.9.6_LI_Images Version: 20.9.5.2.14 Version: 20.6.8 Version: 20.12.4.0.03 Version: 20.16.1 Version: 20.16.1_LI_Images Version: 20.12.4_LI_Images Version: 20.9.5.2.16 Version: 20.12.4.0.4 Version: 20.12.401 Version: 20.9.5.3 Version: 20.9.5.3_LI_Images Version: 20.12.4.1_LI_Images Version: 20.12.4.1 Version: 20.9.5.2.21 Version: 20.9.6.0.3 Version: 20.12.4.0.6 Version: 20.15.2_LI_Images Version: 20.15.2 Version: 20.12.4_Monthly_ES5 Version: 20.12.5 Version: 20.12.5_LI_Images Version: 20.9.7_LI _Images Version: 20.9.7 Version: 20.15.3 Version: 20.15.3_ LI _Images Version: 20.12.501 Version: 20.12.5.1_LI_Images Version: 20.12.5.1 Version: 20.12.5.2_LI_Images Version: 20.12.5.2 Version: 20.15.3.1 Version: 20.15.4_LI_Images Version: 20.15.4 Version: 20.9.7.1_LI _Images Version: 20.9.7.1 Version: 20.18.1 Version: 20.18.1_LI_Images Version: 20.12.6_LI_Images Version: 20.12.6 Version: 20.12.5.1.01 Version: 26.0.1 Version: 20.9.8 Version: 20.9.8_LI_Images Version: 20.18.2 Version: 20.15.4.1_LI_Images Version: 20.15.4.1 Version: 20.18.2_LI_Images Version: 20.18.2.1_LI_Images Version: 20.18.2.1 Version: 20.15.4.2_LI_Images Version: 20.15.4.2 Version: 20.12.6.1 Version: 20.12.6.1_LI_Images Version: 20.12.5.3 Version: 20.12.5.3_LI_Images Version: 20.9.8.2_LI_Images Version: 20.9.8.2 Version: 20.18.3 Version: 20.18.3_LI_Images Version: 20.15.5 Version: 20.15.5_LI_Images Version: 20.12.7 Version: 20.12.7_LI_Images Version: 20.9.9 Version: 20.9.9_LI_Images Version: 20.18.2.2 Version: 20.18.2.2_LI_Images |
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"id": "CVE-2026-20210",
"options": [
{
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{
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{
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"role": "CISA Coordinator",
"timestamp": "2026-05-14T00:00:00+00:00",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2026-05-15T03:56:12.822Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"title": "CISA ADP Vulnrichment"
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}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system.\r\n\r\nThis vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-779",
"description": "Logging of Excessive Data",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-14T16:08:46.451Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-sdwan-mltvnps2-JxpWm7R",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-mltvnps2-JxpWm7R"
},
{
"name": "Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability\u003c/a\u003e was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The \u003ca href=\"#IOC\"\u003eIndicators of Compromise",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk"
}
],
"source": {
"advisory": "cisco-sa-sdwan-mltvnps2-JxpWm7R",
"defects": [
"CSCwt38767"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20210",
"datePublished": "2026-05-14T16:08:46.451Z",
"dateReserved": "2025-10-08T11:59:15.398Z",
"dateUpdated": "2026-05-15T03:56:12.822Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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