How to verify CVE-2026-20347

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-2026-20347. 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='1.3.6.1.4.1.25623.1.1.10.2026.0348' details='1'/>"

NVT OIDs (9)

1.3.6.1.4.1.25623.1.1.10.2026.0348since 2026-09-02
1.3.6.1.4.1.25623.1.1.18.1.2026.11583.1since 2026-08-27
1.3.6.1.4.1.25623.1.1.18.1.2026.21831.1since 2026-09-15
1.3.6.1.4.1.25623.1.1.4.2026.4179.1since 2026-09-17
1.3.6.1.4.1.25623.1.1.4.2026.4180.1since 2026-09-17
1.3.6.1.4.1.25623.1.1.4.2026.4208.1since 2026-09-18
1.3.6.1.4.1.25623.1.1.5.2.2026.3894since 2026-09-02
1.3.6.1.4.1.25623.1.1.5.3.2026.2084since 2026-09-02
1.3.6.1.4.1.25623.1.1.5.3.2026.2116since 2026-09-02

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