How to verify CVE-2026-18303

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 9 NVT checks for CVE-2026-18303. 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='1.3.6.1.4.1.25623.1.1.11.2026.61587' details='1'/>"

NVT OIDs (9)

1.3.6.1.4.1.25623.1.1.11.2026.61587since 2026-09-02
1.3.6.1.4.1.25623.1.1.11.2026.62507since 2026-09-04
1.3.6.1.4.1.25623.1.1.1.1.2026.6470since 2026-08-29
1.3.6.1.4.1.25623.1.1.14.2026.62507since 2026-09-04
1.3.6.1.4.1.25623.1.1.15.2026.61587since 2026-09-04
1.3.6.1.4.1.25623.1.1.15.2026.62507since 2026-09-04
1.3.6.1.4.1.25623.1.1.16.2026.3355since 2026-08-21
1.3.6.1.4.1.25623.1.1.16.2026.3356since 2026-08-21
1.3.6.1.4.1.25623.1.1.16.2026.3415since 2026-08-27

New to OpenVAS? Greenbone documentation ↗

Confirmed exposed? That's one CVE on one host.

We check your whole external estate — hundreds of IPs and domains — for this and thousands more, on a schedule.

Scan my estate

Verify another CVE