Quick answers
- Is CVE-2026-71957 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-71957 being exploited in the wild.
- How severe is CVE-2026-71957?
- Critical severity, with a CVSS score of 9.8, published 8 August 2026.
- Which products and versions are affected?
- D-Link DWR-M961 1.1.2_C1_202602110044 (hardware revision C1).
- Is there a fix for CVE-2026-71957?
- A patch was published on 2026-07-07: Firmware version 1.1.5_C1_202607071108 resolves the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-71957 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-71957?
- Check whether you run D-Link DWR-M961 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A buffer overflow vulnerability exists in the app.cgi component of the D-Link DWR-M961 (hardware revision C1, firmware 1.1.2_C1_202602110044), specifically in the handling of the netAcc.addlist[].name parameter. The vulnerability allows a remote attacker to write an overly long string to this field without proper bounds checking, causing a stack or heap overflow. An attacker can exploit this via network access to the device's web management interface to either cause a denial of service (device crash) or execute arbitrary commands with device privileges. The vulnerability was resolved in firmware version 1.1.5_C1_202607071108.
Affected products
- D-Link DWR-M961 1.1.2_C1_202602110044 (hardware revision C1)
Timeline
- 2026-08-08: disclosed: CVE-2026-71957 published on NVD
- 2026-08-10: advisory: D-Link security announcement SAP10512 last updated
- 2026-07-07: patched: Firmware version 1.1.5_C1_202607071108 resolves the vulnerability