Known vulnerabilities in Cisco IOS XE 17.18.3a

Software: Cisco IOS XE
Version: 17.18.3a
Software CPE: cpe:2.3:o:cisco_systems:cisco_ios_xe:*:*:*:*:*:*:*:*
Total vulnerabilities: 3
Public exploits: 0
Known exploited (KEV): 0
Highest CVSSv4 Score: 8.8

Vulnerabilities by Severity

Severity distribution of vulnerabilities affecting Cisco IOS XE version 17.18.3a Cisco IOS XE 17.18.3a is affected by 3 vulnerabilities: 1 high, 1 medium, 1 low Critical High Medium Low

Vulnerabilities (3)

Vulnerability CWE-ID CSH Severity Public Exploit KEV First fixed release Published Bulletins
#VU141054 - Unchecked Input for Loop Condition
CVE-2026-20301
CWE-606 Medium
No
No
17.12.8, 17.15.6, 17.18.4 06.08.2026 SB2026080633
#VU141046 - Buffer over-read
CVE-2026-20311
CWE-126 Low
No
No
17.12.8, 17.15.6, 17.18.4 06.08.2026 SB2026080631
#VU141045 - Error Handling
CVE-2026-20263
CWE-388 High
No
No
17.12.8, 17.15.6, 17.18.4 06.08.2026 SB2026080630