IO
Product
IOS
by Cisco · last CVE Aug 5, 2026
On CISA KEVExploited in the wild
618
CVEs
39
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 8High 134Medium 81Low 1
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2023-20109
In wildKEV
6.6
2%
Sep 27
Cisco IOS and IOS XE Group Encrypted Transport VPN Out-of-Bounds Write Vulnerability
Affected: 12.4(24)T; 12.4(24)T3; 12.4(22)T1; 12.4(24)T5; 12.4(24)T4; 12.4(22)T; +34 more
CVE-2017-12232
In wildKEV
6.5
2%
Sep 28
Cisco IOS Software for Cisco Integrated Services Routers Denial-of-Service Vulnerability
Affected: 15.0 through 15.6
CVE-2017-12238
In wildKEV
6.5
2%
Sep 28
Cisco Catalyst 6800 Series Switches VPLS Denial-of-Service Vulnerability
Affected: 15.0 through 15.4
CVE-2017-6663
In wildKEV
6.5
2%
Aug 7
Cisco IOS Software and Cisco IOS XE Software Denial-of-Service Vulnerability
Affected: 15.2(3)e; 15.2(3)e1; 15.2(3)e2; 15.2(3)e3; 15.2(3)e4; 15.2(3)e5; +34 more
CVE-2018-0161
In wildKEV
6.3
4%
Mar 28
Cisco IOS Software Resource Management Errors Vulnerability
Affected: 15.2(5)e
CVE-2018-0179
In wildKEV
5.9
5%
Mar 28
Cisco IOS Software Denial-of-Service Vulnerability
Affected: 15.3(00.00.19)sy; 15.4(01)ia001.100; 15.6(01.22)t; 15.3(00.00.19)sy; 15.4(03)m4.1; 15.4(2)cg; +2 more
CVE-2018-0180
In wildKEV
5.9
5%
Mar 28
Cisco IOS Software Denial-of-Service Vulnerability
Affected: 15.3(00.00.19)sy; 15.4(01)ia001.100; 15.6(01.22)t; 15.3(00.00.19)sy; 15.4(03)m4.1; 15.4(2)cg; +2 more
CVE-2017-12319
In wildKEV
5.9
5%
Mar 27
Cisco IOS XE Software Ethernet Virtual Private Network Border Gateway Protocol Denial-of-Service Vulnerability
Affected: 15.4(1)s
CVE-2004-1464
In wildKEV
5.9
5%
Dec 31
Cisco IOS Denial-of-Service Vulnerability
Affected: through 12.2\(15\)zj3
Showing 9
The 500 most important CVEs for this product (exploited first, then by severity)