Is CVE-2026-20133 in the CISA KEV catalog?

Yes. CVE-2026-20133 is on the CISA Known Exploited Vulnerabilities list, added 2026-04-20.

What is the CVSS severity of CVE-2026-20133?

CVE-2026-20133 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-20133?

CVE-2026-20133 has an EPSS score of 10.24% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2026-20133

MEDIUMCISA KEVEPSS 95th pctl

6.5

CVSS v3

NVD

Description

A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.

CWE-200Information Exposure

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

10.24%probability of exploitation in 30 days

95thpercentile

Very high risk: more likely to be exploited than 95% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-04-23

References

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-22.