CVE records

Every CVE as the CVE Program publishes it, refreshed every ten minutes, with NVD's analysis, CISA's known-exploited status and a healthcare tag. Subscribers get the CVEs that match their own systems on My program, by email as they are published. Where the data comes from: sources.

Updated under an hour ago ()

What this means for you

This week: 5,437 CVEs published, 355 critical, and 7 newly confirmed exploited. Add your stack to see whether any of them hit you.

Published in the last 7 days
5,437
Show in the list
Critical, last 7 days
355
Show in the list
Healthcare-tagged, last 7 days
4
Show in the list
Known exploited (CISA KEV)
1,747
Show in the list

Showing CVEs that name the product cisco:ios_xr. Show all products

17 CVEs, showing 1 to 17
CVESeverityTitlePublished
CVE-2009-2055
Known exploited
Medium 5.9Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.
Assigned by cisco
Aug 19, 2009
CVE-2010-3035
Known exploited
High 7.5Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote attackers to cause a denial of service (peering reset) via a cr…
Assigned by cisco
Aug 30, 2010
CVE-2016-6415
Known exploited
High 7.5The server IKEv1 implementation in Cisco IOS 12.2 through 12.4 and 15.0 through 15.6, IOS XE through 3.18S, IOS XR 4.3.x and 5.0.x through 5.2.x, and PIX before 7.0 allows remote attackers to obtain…
Assigned by cisco
Sep 19, 2016
CVE-2018-0175
Known exploited
High 8.0Format String vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent atta…
Assigned by cisco
Mar 28, 2018
CVE-2018-0167
Known exploited
High 8.8Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated,…
Assigned by cisco
Mar 28, 2018
CVE-2020-3118
Known exploited
High 8.8Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability
Assigned by cisco
Feb 5, 2020
CVE-2020-3566
Known exploited
High 8.6Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability
Assigned by cisco
Aug 29, 2020
CVE-2020-3569
Known exploited
High 8.6Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities
Assigned by cisco
Sep 23, 2020
CVE-2022-20821
Known exploited
Medium 6.5Cisco IOS XR Software Health Check Open Port Vulnerability
Assigned by cisco
May 26, 2022
CVE-2023-44487
Known exploited
High 7.5The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Assigned by mitre
Oct 10, 2023
CVE-2025-20363Critical 9.0A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco IOS Software, Cisco IOS XE Software…Sep 25, 2025
CVE-2026-20040High 8.8A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to execute arbitrary commands as root on the underlying operating system of an affected device.Mar 11, 2026
CVE-2026-20046High 8.8A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local attacker to elevate privileges and gain full administrative control of…Mar 11, 2026
CVE-2026-20074High 7.4A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) multi-instance routing feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the IS-IS…Mar 11, 2026
CVE-2026-20276High 8.6Cisco IOS XR Software Security Hardening Release: September 2026
Assigned by cisco
Sep 2, 2026
CVE-2026-20274Critical 9.8Cisco IOS XR Software Security Hardening Release: September 2026
Assigned by cisco
Sep 2, 2026
CVE-2026-20280High 8.8Cisco IOS XR Software Security Hardening Release: September 2026
Assigned by cisco
Sep 2, 2026

CVSS is the assigning CNA's score where it gives one, otherwise NVD's. The healthcare tag is a documented heuristic (a list of clinical and health IT vendors, and clinical terms in the description), not a classification. The CVE record is authoritative.

Your cookie choices
We use essential cookies to run this site, and, only with your consent, an advertising cookie from Google to measure whether our ads lead to sign-ups and subscriptions. See our for details.