D-Link DWR-M961 Buffer Overflow via quicksetup.cgi (CVE-2026-71958) | HOL Guard CVE

Critical · CVSS 9.8CVE-2026-71958

D-Link DWR-M961 Buffer Overflow via quicksetup.cgi

Answer in brief

CVE-2026-71958 records a Critical severity (CVSS 9.8) vulnerability in D-Link DWR-M961 Buffer Overflow via quicksetup.cgi. The current sources do not mark it as known exploited. The current feed maps D-Link Corporation/DWR-M961 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 8, 2026Updated Aug 28, 2026Source checked Sep 22, 2026First seen by HOL Aug 8, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Critical · CVSS 9.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps D-Link Corporation/DWR-M961 (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
D-Link Corporation/DWR-M961generic	>=0 <1.1.5_C1_202607071108	1.1.5_C1_202607071108

Recommended response

Check inventory. Check lockfiles and deployed manifests for D-Link Corporation/DWR-M961.
Review the reported fix. Update D-Link Corporation/DWR-M961 to 1.1.5_C1_202607071108 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 8, 2026

Sources and claim methodology

Upstream source 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 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.

Quoted source text, attributed separately from HOL analysis.