CVE-2026-71958CWE-120

CVE-2026-71958

Critical · published August 8, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
64.6
In the wild
Unconfirmed
What it is

D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the quicksetup.cgi interface. A remote attacker can write overly long strings to the test4, ssid2, and username fields and execute arbitrary commands by crafting a specific payload, or cause the device to crash.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01072 · 64.6th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-08-08T22:16Z
References (3)
https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10512 · [email protected]https://www.dlink.com/middle-east/en/products/dwr-m961-4g-ac1200-lte-router · [email protected]https://www.vulncheck.com/advisories/d-link-dwr-m961-buffer-overflow-via-quicksetup-cgi · [email protected]
EPSS history
Timeline
  • 08 AUG 17:07Z
    D-Link DWR-M961 Buffer Overflow via quicksetup.cgi
    cvelistv5