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IX
Product
IOS XR
by Cisco · last CVE Sep 2, 2026
On CISA KEVExploited in the wild
199
CVEs
9
On KEV
9.8
Max CVSS
0
New 30D
Vulnerabilities199In the news0Timeline
Severity mix
Critical 4High 79Medium 53Low 0
Severity
All severities199Critical4High79Medium53Low0
Exploitation
On CISA KEV9Exploited in the wild9
Watch

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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-20274
9.8
1%
Sep 2
Cisco IOS XR Software Security Hardening Release: September 2026
Affected: 6.5.25; 6.5.26; 6.5.28; 6.5.29; 6.5.31; 6.5.32; +34 more
CVE-2020-3284
9.8
3%
Nov 6
A vulnerability in the enhanced Preboot eXecution Environment (PXE) boot loader for Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to execute…
Affected: before 6.5.2; before 6.5.2; before 6.5.2; before 6.5.2; before 6.5.2; before 6.5.2; +34 more
CVE-2019-1710
9.8
3%
Apr 17
A vulnerability in the sysadmin virtual machine (VM) on Cisco ASR 9000 Series Aggregation Services Routers running Cisco IOS XR 64-bit Software could allow an unauthenticated,…
Affected: before 6.5.3; 7.0 before 7.0.1
CVE-2025-20363
9.0
7%
Sep 25
A vulnerability in the web services of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software, Cisco IOS Software,…
Affected: 6.5.1; 6.5.2; 6.5.3; 6.6.2; 6.6.3; 6.6.25; +7 more
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