CVE-2026-71922CWE-476

CVE-2026-71922

High · published August 24, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
52.0
In the wild
Unconfirmed
What it is

Multiple DrayTek VigorSwitch models contain a pre-authentication null pointer dereference vulnerability in the setget.cgi interface. The vulnerability is caused by missing validation when the pass field is absent. A remote attacker can trigger this vulnerability via a crafted request to crash the service and cause a denial of service.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00685 · 52.0th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2026-08-24T22:17Z
References (2)
https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-series-august-2026/ · [email protected]https://www.vulncheck.com/advisories/draytek-vigorswitch-multiple-models-pre-authentication-null-pointer-dereference-via-setget-cgi · [email protected]
EPSS history
Timeline
  • 26 AUG 08:24Z
    EPSS moved — → 0%
    epss
  • 24 AUG 17:07Z
    DrayTek VigorSwitch Multiple Models Pre-Authentication NULL Pointer Dereference via setget.cgi
    cvelistv5