8.6

CVE-2026-20271

Medienbericht

Cisco IOS XE Software Security Hardening Release

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco IOS XE Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.

The vulnerabilities tracked by CVE-2026-20271 are related to insufficient control flow management issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-691.
 
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cisco ≫ Ios Xe Version16.6.2
Cisco ≫ Ios Xe Version16.6.3
Cisco ≫ Ios Xe Version16.6.4
Cisco ≫ Ios Xe Version16.6.4a
Cisco ≫ Ios Xe Version16.6.4s
Cisco ≫ Ios Xe Version16.6.5
Cisco ≫ Ios Xe Version16.6.5a
Cisco ≫ Ios Xe Version16.6.5b
Cisco ≫ Ios Xe Version16.6.6
Cisco ≫ Ios Xe Version16.6.7
Cisco ≫ Ios Xe Version16.6.7a
Cisco ≫ Ios Xe Version16.6.8
Cisco ≫ Ios Xe Version16.6.9
Cisco ≫ Ios Xe Version16.6.10
Cisco ≫ Ios Xe Version16.7.1
Cisco ≫ Ios Xe Version16.7.1a
Cisco ≫ Ios Xe Version16.7.1b
Cisco ≫ Ios Xe Version16.7.2
Cisco ≫ Ios Xe Version16.7.3
Cisco ≫ Ios Xe Version16.7.4
Cisco ≫ Ios Xe Version16.8.1
Cisco ≫ Ios Xe Version16.8.1a
Cisco ≫ Ios Xe Version16.8.1b
Cisco ≫ Ios Xe Version16.8.1c
Cisco ≫ Ios Xe Version16.8.1d
Cisco ≫ Ios Xe Version16.8.1e
Cisco ≫ Ios Xe Version16.8.1s
Cisco ≫ Ios Xe Version16.8.2
Cisco ≫ Ios Xe Version16.8.3
Cisco ≫ Ios Xe Version16.9.1
Cisco ≫ Ios Xe Version16.9.1a
Cisco ≫ Ios Xe Version16.9.1b
Cisco ≫ Ios Xe Version16.9.1c
Cisco ≫ Ios Xe Version16.9.1d
Cisco ≫ Ios Xe Version16.9.1s
Cisco ≫ Ios Xe Version16.9.2
Cisco ≫ Ios Xe Version16.9.2a
Cisco ≫ Ios Xe Version16.9.2s
Cisco ≫ Ios Xe Version16.9.3
Cisco ≫ Ios Xe Version16.9.3a
Cisco ≫ Ios Xe Version16.9.3h
Cisco ≫ Ios Xe Version16.9.3s
Cisco ≫ Ios Xe Version16.9.4
Cisco ≫ Ios Xe Version16.9.4c
Cisco ≫ Ios Xe Version16.9.5
Cisco ≫ Ios Xe Version16.9.5f
Cisco ≫ Ios Xe Version16.9.6
Cisco ≫ Ios Xe Version16.9.7
Cisco ≫ Ios Xe Version16.9.8
Cisco ≫ Ios Xe Version16.9.8a
Cisco ≫ Ios Xe Version16.9.8b
Cisco ≫ Ios Xe Version16.10.1
Cisco ≫ Ios Xe Version16.10.1a
Cisco ≫ Ios Xe Version16.10.1b
Cisco ≫ Ios Xe Version16.10.1c
Cisco ≫ Ios Xe Version16.10.1d
Cisco ≫ Ios Xe Version16.10.1e
Cisco ≫ Ios Xe Version16.10.1f
Cisco ≫ Ios Xe Version16.10.1g
Cisco ≫ Ios Xe Version16.10.1s
Cisco ≫ Ios Xe Version16.10.2
Cisco ≫ Ios Xe Version16.10.3
Cisco ≫ Ios Xe Version16.11.1
Cisco ≫ Ios Xe Version16.11.1a
Cisco ≫ Ios Xe Version16.11.1b
Cisco ≫ Ios Xe Version16.11.1c
Cisco ≫ Ios Xe Version16.11.1s
Cisco ≫ Ios Xe Version16.11.2
Cisco ≫ Ios Xe Version16.12.1
Cisco ≫ Ios Xe Version16.12.1a
Cisco ≫ Ios Xe Version16.12.1c
Cisco ≫ Ios Xe Version16.12.1s
Cisco ≫ Ios Xe Version16.12.1t
Cisco ≫ Ios Xe Version16.12.1w
Cisco ≫ Ios Xe Version16.12.1x
Cisco ≫ Ios Xe Version16.12.1y
Cisco ≫ Ios Xe Version16.12.1z
Cisco ≫ Ios Xe Version16.12.1z1
Cisco ≫ Ios Xe Version16.12.1z2
Cisco ≫ Ios Xe Version16.12.2
Cisco ≫ Ios Xe Version16.12.2a
Cisco ≫ Ios Xe Version16.12.2s
Cisco ≫ Ios Xe Version16.12.2t
Cisco ≫ Ios Xe Version16.12.3
Cisco ≫ Ios Xe Version16.12.3a
Cisco ≫ Ios Xe Version16.12.3s
Cisco ≫ Ios Xe Version16.12.4
Cisco ≫ Ios Xe Version16.12.4a
Cisco ≫ Ios Xe Version16.12.5
Cisco ≫ Ios Xe Version16.12.5a
Cisco ≫ Ios Xe Version16.12.5b
Cisco ≫ Ios Xe Version16.12.6
Cisco ≫ Ios Xe Version16.12.6a
Cisco ≫ Ios Xe Version16.12.7
Cisco ≫ Ios Xe Version16.12.8
Cisco ≫ Ios Xe Version16.12.9
Cisco ≫ Ios Xe Version16.12.10
Cisco ≫ Ios Xe Version16.12.10a
Cisco ≫ Ios Xe Version16.12.11
Cisco ≫ Ios Xe Version16.12.12
Cisco ≫ Ios Xe Version16.12.13
Cisco ≫ Ios Xe Version16.12.14
Cisco ≫ Ios Xe Version16.12.15
Cisco ≫ Ios Xe Version16.12.16
Cisco ≫ Ios Xe Version17.1.1
Cisco ≫ Ios Xe Version17.1.1a
Cisco ≫ Ios Xe Version17.1.1s
Cisco ≫ Ios Xe Version17.1.1t
Cisco ≫ Ios Xe Version17.1.2
Cisco ≫ Ios Xe Version17.1.3
Cisco ≫ Ios Xe Version17.2.1
Cisco ≫ Ios Xe Version17.2.1a
Cisco ≫ Ios Xe Version17.2.1r
Cisco ≫ Ios Xe Version17.2.1v
Cisco ≫ Ios Xe Version17.2.2
Cisco ≫ Ios Xe Version17.2.3
Cisco ≫ Ios Xe Version17.3.1
Cisco ≫ Ios Xe Version17.3.1a
Cisco ≫ Ios Xe Version17.3.1w
Cisco ≫ Ios Xe Version17.3.1x
Cisco ≫ Ios Xe Version17.3.1z
Cisco ≫ Ios Xe Version17.3.2
Cisco ≫ Ios Xe Version17.3.2a
Cisco ≫ Ios Xe Version17.3.3
Cisco ≫ Ios Xe Version17.3.3a
Cisco ≫ Ios Xe Version17.3.4
Cisco ≫ Ios Xe Version17.3.4a
Cisco ≫ Ios Xe Version17.3.4b
Cisco ≫ Ios Xe Version17.3.4c
Cisco ≫ Ios Xe Version17.3.5
Cisco ≫ Ios Xe Version17.3.5a
Cisco ≫ Ios Xe Version17.3.5b
Cisco ≫ Ios Xe Version17.3.6
Cisco ≫ Ios Xe Version17.3.7
Cisco ≫ Ios Xe Version17.3.8
Cisco ≫ Ios Xe Version17.3.8a
Cisco ≫ Ios Xe Version17.4.1
Cisco ≫ Ios Xe Version17.4.1a
Cisco ≫ Ios Xe Version17.4.1b
Cisco ≫ Ios Xe Version17.4.1c
Cisco ≫ Ios Xe Version17.4.2
Cisco ≫ Ios Xe Version17.4.2a
Cisco ≫ Ios Xe Version17.5.1
Cisco ≫ Ios Xe Version17.5.1a
Cisco ≫ Ios Xe Version17.6.1
Cisco ≫ Ios Xe Version17.6.1a
Cisco ≫ Ios Xe Version17.6.1x
Cisco ≫ Ios Xe Version17.6.1z
Cisco ≫ Ios Xe Version17.6.1z1
Cisco ≫ Ios Xe Version17.6.2
Cisco ≫ Ios Xe Version17.6.3
Cisco ≫ Ios Xe Version17.6.3a
Cisco ≫ Ios Xe Version17.6.4
Cisco ≫ Ios Xe Version17.6.5
Cisco ≫ Ios Xe Version17.6.5a
Cisco ≫ Ios Xe Version17.6.6
Cisco ≫ Ios Xe Version17.6.6a
Cisco ≫ Ios Xe Version17.6.7
Cisco ≫ Ios Xe Version17.6.8
Cisco ≫ Ios Xe Version17.6.8a
Cisco ≫ Ios Xe Version17.7.1
Cisco ≫ Ios Xe Version17.7.1a
Cisco ≫ Ios Xe Version17.7.1b
Cisco ≫ Ios Xe Version17.7.2
Cisco ≫ Ios Xe Version17.8.1
Cisco ≫ Ios Xe Version17.8.1a
Cisco ≫ Ios Xe Version17.9.1
Cisco ≫ Ios Xe Version17.9.1a
Cisco ≫ Ios Xe Version17.9.1w
Cisco ≫ Ios Xe Version17.9.1x
Cisco ≫ Ios Xe Version17.9.1x1
Cisco ≫ Ios Xe Version17.9.1y
Cisco ≫ Ios Xe Version17.9.1y1
Cisco ≫ Ios Xe Version17.9.2
Cisco ≫ Ios Xe Version17.9.2a
Cisco ≫ Ios Xe Version17.9.3
Cisco ≫ Ios Xe Version17.9.3a
Cisco ≫ Ios Xe Version17.9.4
Cisco ≫ Ios Xe Version17.9.4a
Cisco ≫ Ios Xe Version17.9.5
Cisco ≫ Ios Xe Version17.9.5a
Cisco ≫ Ios Xe Version17.9.5b
Cisco ≫ Ios Xe Version17.9.5c
Cisco ≫ Ios Xe Version17.9.5d
Cisco ≫ Ios Xe Version17.9.5e
Cisco ≫ Ios Xe Version17.9.5f
Cisco ≫ Ios Xe Version17.9.6
Cisco ≫ Ios Xe Version17.9.6a
Cisco ≫ Ios Xe Version17.9.7
Cisco ≫ Ios Xe Version17.9.7a
Cisco ≫ Ios Xe Version17.9.7b
Cisco ≫ Ios Xe Version17.9.8
Cisco ≫ Ios Xe Version17.9.9
Cisco ≫ Ios Xe Version17.10.1
Cisco ≫ Ios Xe Version17.10.1a
Cisco ≫ Ios Xe Version17.10.1b
Cisco ≫ Ios Xe Version17.11.1
Cisco ≫ Ios Xe Version17.11.1a
Cisco ≫ Ios Xe Version17.12.1
Cisco ≫ Ios Xe Version17.12.1a
Cisco ≫ Ios Xe Version17.12.1w
Cisco ≫ Ios Xe Version17.12.1x
Cisco ≫ Ios Xe Version17.12.1y
Cisco ≫ Ios Xe Version17.12.1z
Cisco ≫ Ios Xe Version17.12.1z1
Cisco ≫ Ios Xe Version17.12.1z2
Cisco ≫ Ios Xe Version17.12.1z3
Cisco ≫ Ios Xe Version17.12.1z4
Cisco ≫ Ios Xe Version17.12.1z5
Cisco ≫ Ios Xe Version17.12.1z6
Cisco ≫ Ios Xe Version17.12.2
Cisco ≫ Ios Xe Version17.12.2a
Cisco ≫ Ios Xe Version17.12.3
Cisco ≫ Ios Xe Version17.12.3a
Cisco ≫ Ios Xe Version17.12.4
Cisco ≫ Ios Xe Version17.12.4a
Cisco ≫ Ios Xe Version17.12.4b
Cisco ≫ Ios Xe Version17.12.5
Cisco ≫ Ios Xe Version17.12.5a
Cisco ≫ Ios Xe Version17.12.5b
Cisco ≫ Ios Xe Version17.12.5c
Cisco ≫ Ios Xe Version17.12.5d
Cisco ≫ Ios Xe Version17.12.6
Cisco ≫ Ios Xe Version17.12.6a
Cisco ≫ Ios Xe Version17.12.6b
Cisco ≫ Ios Xe Version17.12.7
Cisco ≫ Ios Xe Version17.12.7a
Cisco ≫ Ios Xe Version17.12.7b
Cisco ≫ Ios Xe Version17.13.1
Cisco ≫ Ios Xe Version17.13.1a
Cisco ≫ Ios Xe Version17.14.1
Cisco ≫ Ios Xe Version17.14.1a
Cisco ≫ Ios Xe Version17.15.1
Cisco ≫ Ios Xe Version17.15.1a
Cisco ≫ Ios Xe Version17.15.1b
Cisco ≫ Ios Xe Version17.15.1w
Cisco ≫ Ios Xe Version17.15.1x
Cisco ≫ Ios Xe Version17.15.1y
Cisco ≫ Ios Xe Version17.15.2
Cisco ≫ Ios Xe Version17.15.2a
Cisco ≫ Ios Xe Version17.15.2b
Cisco ≫ Ios Xe Version17.15.2c
Cisco ≫ Ios Xe Version17.15.3
Cisco ≫ Ios Xe Version17.15.3a
Cisco ≫ Ios Xe Version17.15.3b
Cisco ≫ Ios Xe Version17.15.4
Cisco ≫ Ios Xe Version17.15.4a
Cisco ≫ Ios Xe Version17.15.4b
Cisco ≫ Ios Xe Version17.15.4c
Cisco ≫ Ios Xe Version17.15.4d
Cisco ≫ Ios Xe Version17.15.4s1
Cisco ≫ Ios Xe Version17.15.5
Cisco ≫ Ios Xe Version17.15.5a
Cisco ≫ Ios Xe Version17.15.7
Cisco ≫ Ios Xe Version17.16.1
Cisco ≫ Ios Xe Version17.16.1a
Cisco ≫ Ios Xe Version17.17.1
Cisco ≫ Ios Xe Version17.18.1a
Cisco ≫ Ios Xe Version17.18.1w
Cisco ≫ Ios Xe Version17.18.1x
Cisco ≫ Ios Xe Version17.18.1y
Cisco ≫ Ios Xe Version17.18.1z
Cisco ≫ Ios Xe Version17.18.2
Cisco ≫ Ios Xe Version17.18.3
Cisco ≫ Ios Xe Version17.18.3a
Cisco ≫ Ios Xe Version26.1.1
Cisco ≫ Ios Xe Version26.1.1a
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.189
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Cisco PSIRT 8.6 3.9 4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CWE-691 Insufficient Control Flow Management

The code does not sufficiently manage its control flow during execution, creating conditions in which the control flow can be modified in unexpected ways.

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VulnDex Intel
Media Report
06.08.2026 20:31
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-iosxe-V8NMuMZJ
Vendor Advisory
https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification