CVE-2021-1461— Cisco SD-WAN Software Signature Verification Bypass Vulnerability
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I. Basic Information for CVE-2021-1461
Vulnerability Information
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Vulnerability Title
Cisco SD-WAN Software Signature Verification Bypass Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Image Signature Verification feature of Cisco SD-WAN Software could allow an authenticated, remote attacker with Administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.Cisco has released software updates that address the vulnerability described in this advisory. There are no workarounds that address this vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
密码学签名的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco SD-WAN vEdge Router 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco SD-WAN vEdge Routers是美国思科（Cisco）公司的一款路由器。该设备可为思科SD-WAN解决方案提供基本WAN，安全性和多云功能。 Cisco SD-WAN vEdge Router 存在安全漏洞，攻击者可利用该漏洞可以通过路由器的签名验证绕过限制，从而升级他的权限。
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 | 19.2.1 | - | |
| Cisco | Cisco SD-WAN vEdge Router | 18.4.303 | - |
II. Public POCs for CVE-2021-1461
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Cisco · 2024-11-18 · 28 CVEs total
| CVE-2020-27124 | 8.6 HIGH | Cisco Adaptive Security Appliance Software SSL/TLS Denial of Service Vulnerability |
| CVE-2020-26071 | 8.4 HIGH | Cisco SD-WAN vEdge Arbitrary File Creation Vulnerability |
| CVE-2020-26074 | 7.8 HIGH | Cisco SD-WAN vManage Privilege Escalation Vulnerability |
| CVE-2020-26073 | 7.5 HIGH | Cisco SD-WAN vManage Directory Traversal Vulnerability |
| CVE-2021-1440 | 6.8 MEDIUM | Cisco IOS XR Software BGP Resource Public Key Infrastructure Denial of Service Vulnerabili |
| CVE-2021-1232 | 6.5 MEDIUM | Cisco SD-WAN vManage Information Disclosure Vulnerability |
| CVE-2021-1379 | 6.5 MEDIUM | Cisco IP Phones Cisco Discovery Protocol and Link Layer Discovery Protocol Remote Code Exe |
| CVE-2020-3539 | 6.3 MEDIUM | Cisco Data Center Network Manager Authorization Bypass Vulnerability |
| CVE-2021-1444 | 6.1 MEDIUM | Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) |
| CVE-2020-3431 | 6.1 MEDIUM | Cisco Small Business RV Series Routers Cross-Site Scripting Vulnerability |
| CVE-2020-26067 | 5.4 MEDIUM | Cisco Webex Teams Web Interface Cross-Site Scripting Vulnerability |
| CVE-2020-26063 | 5.4 MEDIUM | Cisco Integrated Management Controller Software Authorization Bypass Vulnerability |
| CVE-2020-3548 | 5.3 MEDIUM | Cisco Email Security Appliance Denial Of Service Vulnerability |
| CVE-2021-1234 | 5.3 MEDIUM | Cisco SD-WAN vManage Information Disclosure Vulnerabilities |
| CVE-2021-1132 | 5.3 MEDIUM | Cisco Network Services Orchestrator Path Traversal Vulnerability |
| CVE-2021-1424 | 5.3 MEDIUM | Cisco ASR 5000 Series Software (StarOS) ipsecmgr Process Denial of Service Vulnerability |
| CVE-2020-26062 | 5.3 MEDIUM | Cisco Integrated Management Controller Username Enumeration Vulnerability |
| CVE-2020-3538 | 4.6 MEDIUM | Cisco Data Center Network Manager Path Traversal Vulnerability |
| CVE-2021-1410 | 4.3 MEDIUM | Cisco Webex Meetings Unauthorized Distribution List Update Vulnerability |
| CVE-2021-1425 | 4.3 MEDIUM | Cisco Cisco Email Security Appliance and Content Security Management Appliance Informatio |
Showing top 20 of 28 CVEs. View all on vendor page → →
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-2026-20122
Cisco Catalyst SD-WAN Manager Arbitrary File Overwrite Vulne - 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
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V. Comments for CVE-2021-1461
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