Known Vulnerabilities for Isr 4000 by Cisco

Listed below are 10 of the newest known vulnerabilities associated with "Isr 4000" by "Cisco".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-27857 Sending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer commands will re... Not Provided 2026-03-27 2026-03-27
CVE-2022-20851 A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to perform an in... 7.2 - HIGH 2022-09-30 2023-11-07
CVE-2022-20848 A vulnerability in the UDP processing functionality of Cisco IOS XE Software for Embedded Wireless Controllers on Catalyst 91... 7.5 - HIGH 2022-09-30 2023-11-07
CVE-2022-20818 Multiple vulnerabilities in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to gain elevated pr... 7.8 - HIGH 2022-09-30 2023-11-07
CVE-2022-20775 Multiple vulnerabilities in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to gain elevated pr... 7.8 - HIGH 2022-09-30 2023-11-07
CVE-2021-34725 A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to inject arbitrary c... 6.7 - MEDIUM 2021-09-23 2023-11-07
CVE-2021-34724 A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to elevate privileges an... 6 - MEDIUM 2021-09-23 2023-11-07
CVE-2021-34703 A vulnerability in the Link Layer Discovery Protocol (LLDP) message parser of Cisco IOS Software and Cisco IOS XE Software co... 6.5 - MEDIUM 2021-09-23 2023-11-07
CVE-2021-1621 A vulnerability in the Layer 2 punt code of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause ... 7.4 - HIGH 2021-09-23 2023-11-07
CVE-2021-1620 A vulnerability in the Internet Key Exchange Version 2 (IKEv2) support for the AutoReconnect feature of Cisco IOS Software an... 7.7 - HIGH 2021-09-23 2023-11-07
Results limited to 10 most recent vulnerabilities
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