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CVE-2026-20308: Improper Privilege Management in Cisco Cisco IOS XE Software

0
Medium
VulnerabilityCVE-2026-20308cvecve-2026-20308
Published: 08/05/2026 (08/05/2026, 16:19:49 UTC)
Source: CVE Database V5
Vendor/Project: Cisco
Product: Cisco IOS XE Software

Description

A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote attacker with low privileges to perform a denial of service (DoS) attack against an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the web-based management interface to become unresponsive.

CVSS v3.1

Score 4.3medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected software

Affected versions
=17.2.1a=16.12.1y=16.12.3s=16.12.1w=16.9.1d=17.3.1=16.9.4c=17.2.1=16.9.1b=16.9.2s=16.12.4=16.12.3a=17.1.1s=16.11.1a=16.11.1b=16.9.1s=16.9.3h=16.9.1c=16.10.1f=17.2.1v=16.9.3a=16.12.1a=16.12.1x=16.10.1c=16.12.3=16.11.2=16.12.2s=16.10.1b=16.9.6=16.9.2=16.10.1=16.12.1t=16.9.1=16.9.3s=16.12.2=16.11.1=16.9.3=16.11.1s=16.12.1=17.1.1=17.1.2=16.10.1d=17.1.1t=16.9.4=16.12.2t=16.9.5=16.10.1e=16.10.1a=16.12.1z=16.9.1a=16.9.5f=16.10.1g=16.9.2a=16.10.3=16.11.1c=16.10.1s=17.2.1r=17.1.1a=16.10.2=16.12.2a=16.12.1c=16.12.1s=17.2.2=16.9.8=16.9.7=17.1.3=17.3.1a=17.3.2a=16.12.5=17.3.1w=17.3.2=17.4.1=16.12.4a=17.4.1a=17.3.1x=17.3.3=17.2.3=17.5.1=16.12.1z1=16.12.5a=17.4.1b=17.3.1z=16.12.5b=17.4.2=17.3.3a=17.3.5=17.3.4=17.5.1a=16.12.6=17.6.1=16.12.1z2=17.3.4a=17.6.1a=17.7.1=17.6.1x=17.6.2=16.12.6a=17.3.4c=17.4.2a=17.3.4b=17.7.1a=16.12.7=17.8.1a=17.6.3a=17.6.3=17.7.2=17.7.1b=17.9.1w=17.3.5a=17.6.1z=16.12.8=17.8.1=17.9.1=17.6.4=17.3.5b=17.9.1a=17.3.6=17.10.1=16.9.8a=17.6.1z1=17.10.1a=17.9.2=17.6.5=17.9.1x=17.9.1y=16.9.8b=17.3.7=17.9.2a=17.9.3=16.12.9=17.11.1=17.10.1b=17.6.6=17.9.1x1=17.11.1a=17.9.3a=17.12.1=17.3.8=17.9.4=16.12.10=17.12.1w=17.9.1y1=17.12.1a=17.9.5=17.13.1=17.12.1x=17.12.2=17.14.1=17.9.4a=17.3.8a=17.6.6a=17.6.5a=17.6.7=16.12.10a=17.15.1=17.13.1a=17.12.2a=16.12.11=17.12.3=17.12.1y=17.12.1z=17.9.5a=17.14.1a=17.9.5b=17.6.8=16.12.12=17.12.4=17.9.6=17.17.1=17.16.1=17.15.1w=17.12.3a=17.9.5c=17.15.1a=17.12.1z1=17.15.2=17.15.1b=17.9.5d=17.15.1x=17.9.6a=17.12.1z2=17.6.8a=17.16.1a=16.12.13=17.15.3=17.9.7=17.12.5=17.15.1y=17.9.5e=17.12.4a=17.15.2a=17.15.2c=17.15.2b=17.12.1z3=17.9.5f=17.12.4b=17.12.5a=17.18.1=17.12.6=17.12.1z4=17.9.8=17.9.7a=17.15.3a=17.15.4=17.12.5b=17.15.3b=16.12.14=17.18.1z=17.9.7b=17.12.5c=26.1.1=17.18.1a=17.15.4a=17.18.2=17.18.1w=17.15.4b=17.12.6a=17.12.7=17.15.4c=17.9.9=17.12.5d=16.12.15=17.15.4s1=17.15.5=17.12.1z5=17.18.1x=17.12.1z6=17.15.4d=17.12.6b=17.4.1c=17.15.5a=17.18.1y=17.12.7a=17.18.3=17.12.7b=17.18.3a=26.1.1a=26.2.1ea=16.12.1617.2.1a16.12.1y16.12.3s16.12.1w16.9.1d17.3.116.9.4c17.2.116.9.1b16.9.2s16.12.416.12.3a17.1.1s16.11.1a16.11.1b16.9.1s16.9.3h16.9.1c16.10.1f17.2.1v16.9.3a16.12.1a16.12.1x16.10.1c16.12.316.11.216.12.2s16.10.1b16.9.616.9.216.10.116.12.1t16.9.116.9.3s16.12.216.11.116.9.316.11.1s16.12.117.1.117.1.216.10.1d17.1.1t16.9.416.12.2t16.9.516.10.1e16.10.1a16.12.1z16.9.1a16.9.5f16.10.1g16.9.2a16.10.316.11.1c16.10.1s17.2.1r17.1.1a16.10.216.12.2a16.12.1c16.12.1s17.2.216.9.816.9.717.1.317.3.1a17.3.2a16.12.517.3.1w17.3.217.4.116.12.4a17.4.1a17.3.1x17.3.317.2.317.5.116.12.1z116.12.5a17.4.1b17.3.1z16.12.5b17.4.217.3.3a17.3.517.3.417.5.1a16.12.617.6.116.12.1z217.3.4a17.6.1a17.7.117.6.1x17.6.216.12.6a17.3.4c17.4.2a17.3.4b17.7.1a16.12.717.8.1a17.6.3a17.6.317.7.217.7.1b17.9.1w17.3.5a17.6.1z16.12.817.8.117.9.117.6.417.3.5b17.9.1a17.3.617.10.116.9.8a17.6.1z117.10.1a17.9.217.6.517.9.1x17.9.1y16.9.8b17.3.717.9.2a17.9.316.12.917.11.117.10.1b17.6.617.9.1x117.11.1a17.9.3a17.12.117.3.817.9.416.12.1017.12.1w17.9.1y117.12.1a17.9.517.13.117.12.1x17.12.217.14.117.9.4a17.3.8a17.6.6a17.6.5a17.6.716.12.10a17.15.117.13.1a17.12.2a16.12.1117.12.317.12.1y17.12.1z17.9.5a17.14.1a17.9.5b17.6.816.12.1217.12.417.9.617.17.117.16.117.15.1w17.12.3a17.9.5c17.15.1a17.12.1z117.15.217.15.1b17.9.5d17.15.1x17.9.6a17.12.1z217.6.8a17.16.1a16.12.1317.15.317.9.717.12.517.15.1y17.9.5e17.12.4a17.15.2a17.15.2c17.15.2b17.12.1z317.9.5f17.12.4b17.12.5a17.18.117.12.617.12.1z417.9.817.9.7a17.15.3a17.15.417.12.5b17.15.3b16.12.1417.18.1z17.9.7b17.12.5c26.1.117.18.1a17.15.4a17.18.217.18.1w17.15.4b17.12.6a17.12.717.15.4c17.9.917.12.5d16.12.1517.15.4s117.15.517.12.1z517.18.1x17.12.1z617.15.4d17.12.6b17.4.1c17.15.5a17.18.1y17.12.7a17.18.317.12.7b17.18.3a26.1.1a26.2.1ea16.12.16

Technical Details

Data Version
5.2
Assigner Short Name
cisco
Date Reserved
2025-10-08T11:59:15.409Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a736b62bf8831d5392da518

Added to database: 08/05/2026, 16:57:06 UTC

Last updated: 08/06/2026, 03:31:28 UTC

Views: 3

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