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. Free accounts get a daily email of the CVEs that match up to 3 of their products on My program; subscribers get each one the moment it is published. Where the data comes from: sources.

Updated under an hour ago (Oct 30, 2026, 2:00 AM ET)

What this means for you

This week: 3,342 CVEs published, 232 critical, and 2 newly confirmed exploited. Add your stack to see whether any of them hit you.

Do this next

Start free and add your stackFree account, 3 products This week's critical CVEs Exploited in the last 30 days

Published in the last 7 days: 3,342; Show in the list
Critical, last 7 days: 232; Show in the list
Healthcare-tagged, last 7 days: 5; Show in the list
Known exploited (CISA KEV): 1,764; Show in the list

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

17 CVEs

Showing 1 to 10.

CVE	Severity	Title	Published
CVE-2009-2055 Known exploited	Medium 5.9	Cisco 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 7.5	Cisco 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 7.5	The 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 18, 2016
CVE-2018-0175 Known exploited	High 8.0	Format 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 8.8	Multiple 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 8.8	Cisco IOS XR Software Cisco Discovery Protocol Format String Vulnerability Assigned by cisco	Feb 5, 2020
CVE-2020-3566 Known exploited	High 8.6	Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability Assigned by cisco	Aug 29, 2020
CVE-2020-3569 Known exploited	High 8.6	Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities Assigned by cisco	Sep 22, 2020
CVE-2022-20821 Known exploited	Medium 6.5	Cisco IOS XR Software Health Check Open Port Vulnerability Assigned by cisco	May 26, 2022
CVE-2023-44487 Known exploited	High 7.5	The 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 9, 2023

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.