Is CVE-2026-26030 in the CISA KEV catalog?

No. CVE-2026-26030 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-26030?

CVE-2026-26030 has a CVSS v3 base score of 9.9 (Important).

What is the EPSS score for CVE-2026-26030?

CVE-2026-26030 has an EPSS score of 2.91% (85th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2026-26030

HIGHEPSS 85th pctl

9.9

CVSS v3

NVD

Description

CVE-2026-26030 is a Remote Code Execution vulnerability that has been identified in Microsoft Semantic Kernel Python SDK, specifically within the InMemoryVectorStore filter functionality. GitHub created this CVE on their behalf. GitHub created this CVE on their behalf. This document incorporates updates in the Microsoft Semantic Kernel Repository which address this vulnerability. Please see CVE-2026-26030 for more information.

CWE-94Code Injection

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.91%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

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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 2026-03-03.