CVE-2026-20126 (GCVE-0-2026-20126)
Vulnerability from cvelistv5
Published
2026-02-25 16:13
Modified
2026-03-20 21:48
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-648 - Incorrect Use of Privileged APIs
Summary
A vulnerability in Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker with low privileges to gain root privileges on the underlying operating system.
This vulnerability is due to an insufficient user authentication mechanism in the REST API. An attacker could exploit this vulnerability by sending a request to the REST API of the affected system. A successful exploit could allow the attacker to gain root privileges on the underlying operating system.
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: 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 |
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],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker with low privileges to gain root privileges on the underlying operating system.\r\n\r\nThis vulnerability is due to an insufficient user authentication mechanism in the REST API. An attacker could exploit this vulnerability by sending a request to the REST API of the affected system. A successful exploit could allow the attacker to\u0026nbsp;gain root privileges on the underlying operating system."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in CVE-2026-20133, CVE-2026-20126, and CVE-2026-20129.\r\n\r\nIn March 2026, the Cisco PSIRT became aware of active exploitation of the vulnerabilities that are described in CVE-2026-20128 and CVE-2026-20122 only. The vulnerabilities that are described in the other CVEs in this advisory are not known to have been compromised. Cisco strongly recommends that customers upgrade to a fixed software release to remediate these vulnerabilities."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-648",
"description": "Incorrect Use of Privileged APIs",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-20T21:48:28.435Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-sdwan-authbp-qwCX8D4v",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v"
}
],
"source": {
"advisory": "cisco-sa-sdwan-authbp-qwCX8D4v",
"defects": [
"CSCws93470"
],
"discovery": "INTERNAL"
},
"title": "Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20126",
"datePublished": "2026-02-25T16:13:58.856Z",
"dateReserved": "2025-10-08T11:59:15.378Z",
"dateUpdated": "2026-03-20T21:48:28.435Z",
"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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