CVE-2026-20126— Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
Quick assessment
Affected
Cisco Cisco Catalyst SD-WAN Manager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Cisco Catalyst SD-WAN Manager（Cisco SD-WAN vManage）是美国思科（Cisco）公司的一个高度可定制的仪表板。可简化和自动化 Cisco SD-WAN 的部署、配置、管理和操作。 Cisco Catalyst SD-WAN Manager存在安全漏洞，该漏洞源于REST API用户身份验证机制不足，可能导致低权限攻击者获取root权限。
Possible ATT&CK Techniques 3 AI
T1098.004 · SSH Authorized Keys T1068.003 T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-20126
Vulnerability Information
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Vulnerability Title
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权API的不正确使用
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Catalyst SD-WAN Manager 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Catalyst SD-WAN Manager（Cisco SD-WAN vManage）是美国思科（Cisco）公司的一个高度可定制的仪表板。可简化和自动化 Cisco SD-WAN 的部署、配置、管理和操作。 Cisco Catalyst SD-WAN Manager存在安全漏洞，该漏洞源于REST API用户身份验证机制不足，可能导致低权限攻击者获取root权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Catalyst SD-WAN Manager | 20.1.12 | - |
|
II. Public POCs for CVE-2026-20126
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Cisco · 2026-02-25 · 15 CVEs total
| CVE-2026-20127 | 10.0 CRITICAL | Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability |
| CVE-2026-20129 | 9.8 CRITICAL | Cisco Catayst SD-WAN Authentication Bypass Vulnerability |
| CVE-2026-20048 | 7.7 HIGH | Cisco NX-OS Software SNMP Denial of Service Vulnerability |
| CVE-2026-20128 | 7.5 HIGH | Cisco Catalyst SD-WAN Manager Information Disclosure Vulnerability |
| CVE-2026-20033 | 7.4 HIGH | Cisco NX-OS Software Denial of Service Vulnerability |
| CVE-2026-20010 | 7.4 HIGH | Cisco Nexus 3000 and 9000 Series Switches Link Layer Discovery Protocol Denial of Service |
| CVE-2026-20051 | 7.4 HIGH | Cisco Nexus 3600-R and 9500-R Series Switching Platforms Layer 2 Loop Denial of Service Vu |
| CVE-2026-20099 | 6.7 MEDIUM | Cisco UCS Manager and FXOS Software Command Injection Vulnerability |
| CVE-2026-20036 | 6.5 MEDIUM | Cisco UCS Manager Software Command Injection Vulnerability |
| CVE-2026-20133 | 6.5 MEDIUM | Cisco Catalyst SD-WAN Manager（Cisco SD-WAN vManage） 信息泄露漏洞 |
| CVE-2026-20107 | 5.5 MEDIUM | Cisco Application Policy Infrastructure Controller Denial of Service Vulnerability |
| CVE-2026-20122 | 5.4 MEDIUM | Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability |
| CVE-2026-20091 | 4.8 MEDIUM | Cisco UCS Manager and FXOS Software Stored Cross-Site Scripting Vulnerability |
| CVE-2026-20037 | 4.4 MEDIUM | Cisco UCS Manager File Write Vulnerability |
IV. Related Vulnerabilities
Same product: Cisco Catalyst SD-WAN Manager
-
CVE-2026-76504
Cisco Catalyst SD-WAN Manager System Account Authorization B -
CVE-2026-20294
Cisco Catalyst SD-WAN Manager Information Disclosure Vulnera -
CVE-2026-20262
Cisco Catalyst SD-WAN Manager Arbitrary File Write Vulnerabi -
CVE-2026-20224
Cisco Catalyst SD-WAN Manager XML External Entity Injection -
CVE-2026-20210
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerabi
Same vendor: Cisco
-
CVE-2026-76504
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CVE-2026-76426
Cisco ISE REST API SQL Injection Vulnerability -
CVE-2026-20121
CIsco FTD Bypass Access List -
CVE-2026-76431
Cisco Identity Services Engine Arbitrary File Deletion Vulne -
CVE-2026-76427
Cisco ISE XML External Entity Injection Vulnerability
Same weakness: CWE-648
-
CVE-2026-76460
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Anchore Enterprise Privilege Escalation via User Management -
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Unity parsec 权限许可和访问控制问题漏洞 -
CVE-2026-11877
Missing Authorization Vulnerability in OpenText Access Manag -
CVE-2026-41225
iControl REST vulnerability
V. Comments for CVE-2026-20126
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