D-Link DWR-M961 up to 1.1.5_C1_202607071107 CGI Interface app.cgi buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$5k-$25k0.55

Summaryinfo

A vulnerability was found in D-Link DWR-M961 up to 1.1.5_C1_202607071107. It has been rated as very critical. Impacted is an unknown function of the file app.cgi of the component CGI Interface. This manipulation causes buffer overflow. This vulnerability is registered as CVE-2026-71957. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in D-Link DWR-M961 up to 1.1.5_C1_202607071107. It has been declared as very critical. Affected by this vulnerability is an unknown function of the file app.cgi of the component CGI Interface. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE 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 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.

The advisory is shared at supportannouncement.us.dlink.com. This vulnerability is known as CVE-2026-71957 since 08/08/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/08/2026).

Upgrading to version 1.1.5_C1_202607071108 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.5

VulDB Base Score: 9.9
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: DWR-M961 1.1.5_C1_202607071108

Timelineinfo

08/08/2026 Advisory disclosed
08/08/2026 +0 days CVE reserved
08/08/2026 +0 days VulDB entry created
08/08/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: supportannouncement.us.dlink.com
Status: Confirmed

CVE: CVE-2026-71957 (🔒)
GCVE (CVE): GCVE-0-2026-71957
GCVE (VulDB): GCVE-100-387205

Entryinfo

Created: 08/08/2026 19:31
Changes: 08/08/2026 19:31 (55)
Complete: 🔍
Cache ID: 216::103

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