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Vulnerability record · CVE-2026-71957 · published 8 August 2026

CVE-2026-71957: Classic buffer overflow vulnerability

D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the app.cgi interface. A remote attacker can write an overly long string to the netAcc.addlist[].name field and execute arbitrary commands by crafting a specific payload, or cause the device to crash.

9.3 CVSS 4.0 Critical EPSS 1.1% · top 36.5% CWE-120 · Classic buffer overflow Deferred
9.3CVSS 4.0 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
31 Aug 2026Last modified by NVD

Description

D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the app.cgi interface. A remote attacker can write an overly long string to the netAcc.addlist[].name field and execute arbitrary commands by crafting a specific payload, or cause the device to crash.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10512
https://www.dlink.com/middle-east/en/products/dwr-m961-4g-ac1200-lte-router
https://www.vulncheck.com/advisories/d-link-dwr-m961-buffer-overflow-via-app-cgi

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Source: NIST National Vulnerability Database (record CVE-2026-71957), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.