CVE-2026-20122— Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability
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I. Basic Information for CVE-2026-20122
Vulnerability Information
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Vulnerability Title
Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system. This vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权API的不正确使用
Source: NVD (National Vulnerability Database)
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API接口文件处理不当，可能导致具有只读权限的攻击者覆盖任意文件并获取vmanage用户权限。
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)
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Catalyst SD-WAN Manager | 20.1.12 | - |
II. Public POCs for CVE-2026-20122
| # | POC Description | Source Link | Shenlong Link |
|---|
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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-2026-20126 | 8.8 HIGH | Cisco Catalyst SD-WAN Manager Privilege Escalation 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-2026-20091 | 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-2026-20108
Cisco Catalyst SD-WAN Manager（Cisco SD-WAN vManage） 跨站脚本漏洞 - CVE-2026-20127
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulne - CVE-2026-20128
Cisco Catalyst SD-WAN Manager Information Disclosure Vulnera - CVE-2026-20129
Cisco Catayst SD-WAN Authentication Bypass Vulnerability - CVE-2026-20126
Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerabi
Same vendor: Cisco
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-648
- CVE-2026-41386
OpenClaw < 2026.3.22 - Privilege Escalation via Unbound Boot - CVE-2026-41329
OpenClaw < 2026.3.31 - Sandbox Bypass via Heartbeat Context - CVE-2026-35669
OpenClaw < 2026.3.25 - Privilege Escalation via Gateway Plug - CVE-2026-35663
OpenClaw < 2026.3.25 - Privilege Escalation via Backend Reco - CVE-2026-35645
OpenClaw < 2026.3.25 - Privilege Escalation via Synthetic op
V. Comments for CVE-2026-20122
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