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CVE-2020-26071— Cisco SD-WAN vEdge Arbitrary File Creation 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 SD-WAN vEdge是美国思科（Cisco）公司的是一款路由器。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 中存在安全漏洞。攻击者可以通过Cisco SD-WAN vEdge的CLI文件创建触发致命错误，进而触发拒绝服务。

CVSS 8.4 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-26071

Vulnerability Information
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Vulnerability Title
Cisco SD-WAN vEdge Arbitrary File Creation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to create or overwrite arbitrary files on an affected device, which could result in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation for specific commands. An attacker could exploit this vulnerability by including crafted arguments to those specific commands. A successful exploit could allow the attacker to create or overwrite arbitrary files on the affected device, which could result in a DoS condition.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco SD-WAN vEdge 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco SD-WAN vEdge是美国思科（Cisco）公司的是一款路由器。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 中存在安全漏洞。攻击者可以通过Cisco SD-WAN vEdge的CLI文件创建触发致命错误，进而触发拒绝服务。
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 -
Cisco Cisco SD-WAN vContainer 18.4.5 -
Cisco Cisco SD-WAN vEdge Cloud 19.2.1 -
Cisco Cisco SD-WAN vEdge Router 18.4.303 -

II. Public POCs for CVE-2020-26071

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III. Intelligence Information for CVE-2020-26071

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Vendor Advisories for CVE-2020-26071 (1)

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-2020-26074 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-2021-1424 5.3 MEDIUM Cisco ASR 5000 Series Software (StarOS) ipsecmgr Process Denial of Service Vulnerability
CVE-2021-1132 5.3 MEDIUM Cisco Network Services Orchestrator Path Traversal Vulnerability
CVE-2021-1234 5.3 MEDIUM Cisco SD-WAN vManage Information Disclosure Vulnerabilities
CVE-2020-26062 5.3 MEDIUM Cisco Integrated Management Controller Username Enumeration Vulnerability
CVE-2021-1461 4.9 MEDIUM Cisco SD-WAN Software Signature Verification Bypass 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
Same vendor: Cisco
Same weakness: CWE-22

V. Comments for CVE-2020-26071

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