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CVE-2026-124563

7.5, high

D-Link DIR-878 Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
0.5% higher than 45.5% of scored CVEs
Exploitation
No public evidence
Published
9 Nov 2026yesterday

Description

A security flaw has been discovered in D-Link DIR-878 1.20B05. Affected by this vulnerability is the function SetWanSettings of the component HNAP Handler. The manipulation of the argument Primary/Secondary results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.

Details

Vendor
D-Link
Product
DIR-878
Weakness
CWE-119 (opens in a new tab)
Status
Deferred
Updated
9 Nov 2026
Assigner
cna@vuldb.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References 6

Other references 6

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other D-Link CVEs

Every D-Link CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2025-29635 D-Link DIR-823X Command Injection Vulnerability KEV EPSS 88% 7.2, high
  • CVE-2024-3272 D-Link Multiple NAS Devices Use of Hard-Coded Credentials Vulnerability KEV EPSS 98% 9.8, critical
  • CVE-2024-3273 D-Link Multiple NAS Devices Command Injection Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2024-0769 D-Link DIR-859 Router Path Traversal Vulnerability KEV EPSS 83% 9.8, critical
  • CVE-2023-25280 D-Link DIR-820 Router OS Command Injection Vulnerability KEV EPSS 98% 9.8, critical
  • CVE-2022-40799 D-Link DNR-322L Download of Code Without Integrity Check Vulnerability KEV EPSS 34% 8.8, high
  • CVE-2016-20017 D-Link DSL-2750B Devices Command Injection Vulnerability KEV EPSS 66% 9.8, critical
  • CVE-2022-37055 D-Link Routers Buffer Overflow Vulnerability KEV EPSS 56% 9.8, critical

Beyond this page

Is CVE-2026-124563 in your network?

This page tells you how dangerous CVE-2026-124563 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 10 Nov 2026, not the live upstream state.