CVE-2021-1391— Cisco IOS and IOS XE Software Privilege Escalation Vulnerability
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I. Basic Information for CVE-2021-1391
Vulnerability Information
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Vulnerability Title
Cisco IOS and IOS XE Software Privilege Escalation Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the dragonite debugger of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root privilege. The vulnerability is due to the presence of development testing and verification scripts that remained on the device. An attacker could exploit this vulnerability by bypassing the consent token mechanism with the residual scripts on the affected device. A successful exploit could allow the attacker to escalate from privilege level 15 to root privilege.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
遗留的调试代码
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS XE Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE Software是美国思科（Cisco）公司的一个操作系统。用于企业有线和无线访问，汇聚，核心和WAN的单一操作系统，Cisco IOS XE降低了业务和网络的复杂性。 Cisco IOS XE 存在安全漏洞，攻击者可利用该漏洞从特权级别15升级到root特权。
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
II. Public POCs for CVE-2021-1391
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-FSM-Yj8qJbJcvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2021-1391
Same Patch Batch · Cisco · 2021-03-24 · 45 CVEs total
| CVE-2021-1418 | 9.9 CRITICAL | Cisco Jabber Desktop and Mobile Client Software Vulnerabilities |
| CVE-2021-1417 | 9.9 CRITICAL | Cisco Jabber Desktop and Mobile Client Software Vulnerabilities |
| CVE-2021-1411 | 9.9 CRITICAL | Cisco Jabber Desktop and Mobile Client Software Vulnerabilities |
| CVE-2021-1471 | 9.9 CRITICAL | Cisco Jabber Desktop and Mobile Client Software Vulnerabilities |
| CVE-2021-1469 | 9.9 CRITICAL | Cisco Jabber Desktop and Mobile Client Software Vulnerabilities |
| CVE-2021-1373 | 8.6 HIGH | Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Se |
| CVE-2021-1446 | 8.6 HIGH | Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnera |
| CVE-2021-1451 | 8.1 HIGH | Cisco IOS XE Software Easy Virtual Switching System Arbitrary Code Execution Vulnerability |
| CVE-2021-1433 | 8.1 HIGH | Cisco IOS XE SD-WAN Software vDaemon Buffer Overflow Vulnerability |
| CVE-2021-1392 | 7.8 HIGH | Cisco IOS and IOS XE Software Common Industrial Protocol Privilege Escalation Vulnerabili |
| CVE-2021-1437 | 7.5 HIGH | Cisco Aironet Access Points FlexConnect Upgrade Information Disclosure Vulnerability |
| CVE-2021-1431 | 7.5 HIGH | Cisco IOS XE SD-WAN Software vDaemon Denial of Service Vulnerability |
| CVE-2021-1352 | 7.4 HIGH | Cisco IOS XE Software DECnet Phase IV/OSI Denial of Service Vulnerability |
| CVE-2021-1439 | 7.4 HIGH | Cisco Aironet Access Points FlexConnect Multicast DNS Denial of Service Vulnerability |
| CVE-2021-1403 | 7.4 HIGH | Cisco IOS XE Software Web UI Cross-Site WebSocket Hijacking Vulnerability |
| CVE-2021-1432 | 7.3 HIGH | Cisco IOS XE SD-WAN Software Arbitrary Command Execution Vulnerability |
| CVE-2021-1398 | 6.8 MEDIUM | Cisco IOS XE Software Arbitrary Code Execution Vulnerability |
| CVE-2021-1452 | 6.8 MEDIUM | Cisco IOS XE ROM Monitor Software for Cisco Industrial Switches OS Command Injection Vulne |
| CVE-2021-1453 | 6.8 MEDIUM | Cisco IOS XE Software for the Catalyst 9000 Family Arbitrary Code Execution Vulnerability |
| CVE-2021-1441 | 6.7 MEDIUM | Cisco IOS XE Software Hardware Initialization Routines Arbitrary Code Execution Vulnerabil |
Showing top 20 of 45 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cisco IOS
- CVE-2023-20080
Cisco IOS and IOS XE Software IPv6 DHCP (DHCPv6) Relay and S - CVE-2023-20081
Cisco Adaptive Security Appliance Software, Firepower Threat - CVE-2023-20076
Cisco IOx Application Hosting Environment Command Injection - CVE-2022-20920
Cisco IOS and IOS XE Software SSH Denial of Service Vulnera - CVE-2022-20919
Cisco IOS and IOS XE Software Common Industrial Protocol Req
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-489
V. Comments for CVE-2021-1391
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