CVE-2026-20267 Details
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-2026-20267 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2026-20267
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
0.26 Probability of exploitation activity being observed over the next 30 days (18th percentile)
CVSS score for CVE-2026-20267
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
9 Critical
Products affected by CVE-2026-20267
IOS XE 16.6.4
IOS XE 17.3.4a
IOS XE 17.15.1a
IOS XE 17.18.1a
IOS XE 17.8.1a
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2026-20267 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
RU 174 97.75%
US 2 1.12%
AZ 1 0.56%
CN 1 0.56%

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CVE-2026-20267 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Telecommunications 147 100.00%

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