How to verify CVE-2026-20901

Confirm whether your systems are actually affected — run the exact detection check below (Nuclei command or OpenVAS NVT). Detection only; it does not exploit.

Verify with OpenVAS

Greenbone/OpenVAS ships 8 NVT checks for CVE-2026-20901. OpenVAS detects this CVE by NVT OID — enable the NVT in your scan config, or confirm it is in your feed with the query below.

Confirm the NVT is in your feed (GMP)

gvm-cli socket --xml "<get_nvts nvt_oid='1.3.6.1.4.1.25623.1.1.16.2026.3408' details='1'/>"

NVT OIDs (8)

1.3.6.1.4.1.25623.1.1.16.2026.3408since 2026-08-27
1.3.6.1.4.1.25623.1.1.18.1.2026.21736.1since 2026-09-11
1.3.6.1.4.1.25623.1.1.4.2026.3917.1since 2026-09-12
1.3.6.1.4.1.25623.1.1.4.2026.4019.1since 2026-09-15
1.3.6.1.4.1.25623.1.1.4.2026.4025.1since 2026-09-15
1.3.6.1.4.1.25623.1.1.5.2.2026.3872since 2026-09-02
1.3.6.1.4.1.25623.1.1.5.3.2026.2080since 2026-09-02
1.3.6.1.4.1.25623.1.1.8.2026.500239since 2026-09-05

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