Threat Intelligence / CVE / CVE-2026-20138

CVE-2026-20138

CVSS 4.9 (MEDIUM) · EPSS 0.1% · Published 2026-02-18

A user of a Splunk Search Head Cluster deployment with access to the _internal index could view Duo authentication secrets in plain text.

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)

CWE-532

Threats tracking this CVE

Cisco Webex Services Critical Improper Certificate Validation Flaw (CVE-2026-20137) Enables Man-in-the-Middle Against Cloud Meeting Traffic — CRITICAL

References

https://advisory.splunk.com/advisories/SVD-2026-0203

Full detection coverage & IOCs for threats exploiting CVE-2026-20138 are available via the Threadlinqs MCP server (Purple tier). View plans →

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