Is CVE-2026-3563 in the CISA KEV catalog?

No. CVE-2026-3563 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-3563?

CVE-2026-3563 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2026-3563?

CVE-2026-3563 has an EPSS score of 0.34% (26th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-3563?

Upgrade powershell universal to 2026.1.4 or later.

CVE & CISA-KEV Catalog

CVE-2026-3563

MEDIUM

5.5

CVSS v3

NVD

Description

Improper input validation in the apps and endpoints configuration in PowerShell Universal before 2026.1.4 allows an authenticated user with permissions to create or modify Apps or Endpoints to override existing application or system routes, resulting in unintended request routing and denial of service via a conflicting URL path.

CWE-1289

How to fix

Remediation Available

powershell universalNVD

Affected:< 2026.1.4Fixed in:2026.1.4CVE-2026-3563derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityLow

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

Exploit Intelligence

0.34%probability of exploitation in 30 days

26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Vendor Advisory1

devolutions.net

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Markdown

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HTML

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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 2026-03-19.