How to verify CVE-2026-4408

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 36 NVT checks for CVE-2026-4408. 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='1.3.6.1.4.1.25623.1.0.157046' details='1'/>"

NVT OIDs (36)

1.3.6.1.4.1.25623.1.0.157046since 2026-06-25
1.3.6.1.4.1.25623.1.1.11.2026.22644since 2026-06-25
1.3.6.1.4.1.25623.1.1.11.2026.22963since 2026-06-25
1.3.6.1.4.1.25623.1.1.11.2026.25049since 2026-06-25
1.3.6.1.4.1.25623.1.1.11.2026.28132since 2026-06-25
1.3.6.1.4.1.25623.1.1.1.1.2026.6297since 2026-06-25
1.3.6.1.4.1.25623.1.1.1.2.2026.4692since 2026-07-23
1.3.6.1.4.1.25623.1.1.12.2026.8306.1since 2026-06-25
1.3.6.1.4.1.25623.1.1.12.2026.8306.2since 2026-06-25
1.3.6.1.4.1.25623.1.1.13.2026.158.01since 2026-06-25

+ 26 more NVTs

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