CVE-2020-3473— Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerability
Quick assessment
Affected
Cisco Cisco IOS XR Software
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 IOS和Cisco IOS XR都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR存在权限许可和访问控制问题漏洞，该漏洞源于源代码中的命令到任务组的映射不正确造成的，攻击者可借助该漏洞提升权限并获取设备的管理控制权限。
Possible ATT&CK Techniques 3 AI
T1078 · Valid Accounts T1068 · Exploitation for Privilege Escalation T1548 · Abuse Elevation Control Mechanism
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I. Basic Information for CVE-2020-3473
Vulnerability Information
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Vulnerability Title
Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local CLI shell user to elevate privileges and gain full administrative control of the device. The vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker could exploit this vulnerability by first authenticating to the local CLI shell on the device and using the CLI command to bypass the task group–based checks. A successful exploit could allow the attacker to elevate privileges and perform actions on the device without authorization checks.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
权限、特权和访问控制
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XR 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和Cisco IOS XR都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco IOS XR存在权限许可和访问控制问题漏洞，该漏洞源于源代码中的命令到任务组的映射不正确造成的，攻击者可借助该漏洞提升权限并获取设备的管理控制权限。
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 IOS XR Software | n/a | - |
|
II. Public POCs for CVE-2020-3473
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2020-3473 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-LJtNFjeN vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2020-09-04 · 15 CVEs total
| CVE-2020-3495 | 9.9 CRITICAL | Cisco Jabber for Windows Message Handling Arbitrary Code Execution Vulnerability |
| CVE-2020-3430 | 8.8 HIGH | Cisco Jabber for Windows Protocol Handler Command Injection Vulnerability |
| CVE-2020-3530 | 8.4 HIGH | Cisco IOS XR Authenticated User Privilege Escalation Vulnerability |
| CVE-2020-3478 | 8.1 HIGH | Cisco Enterprise NFV Infrastructure Software File Overwrite Vulnerability |
| CVE-2020-3498 | 6.5 MEDIUM | Cisco Jabber for Windows Information Disclosure Vulnerability |
| CVE-2020-3545 | 6.0 MEDIUM | Cisco FXOS Software Buffer Overflow Vulnerability |
| CVE-2020-3537 | 5.7 MEDIUM | Cisco Jabber for Windows Universal Naming Convention Link Handling Vulnerability |
| CVE-2020-3542 | 5.3 MEDIUM | Cisco Webex Training Unauthorized Meeting Join Vulnerability |
| CVE-2020-3451 | 4.7 MEDIUM | Cisco Small Business RV340 Series Routers Command Injection and Remote Code Execution Vuln |
| CVE-2020-3453 | 4.7 MEDIUM | Cisco Small Business RV340 Series Routers Command Injection and Remote Code Execution Vuln |
| CVE-2020-3541 | 4.4 MEDIUM | Cisco Webex Meetings Client for Windows, Webex Meetings Desktop App, and Webex Teams Infor |
| CVE-2020-3547 | 4.3 MEDIUM | Cisco Email Security Appliance, Cisco Content Security Management Appliance, and Cisco Web |
| CVE-2020-3365 | 4.3 MEDIUM | Cisco Enterprise NFV Infrastructure Software Path Traversal Vulnerability |
| CVE-2020-3546 | Cisco Email Security Appliance Information Disclosure Vulnerability |
IV. Related Vulnerabilities
Same product: Cisco IOS XR Software
-
CVE-2026-20278
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CVE-2026-20275
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Same vendor: Cisco
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V. Comments for CVE-2020-3473
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