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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
D-Link DIR-878 affected
Version Status Constraints
1.20B05 affected —

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Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/Zimo-666/DIR-878-cves/tree/main/05-setwansettings-l2tp-pptp-dns-overflow cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-124563 cve-icon cve-icon
https://vuldb.com/submit/1035619 cve-icon cve-icon
https://vuldb.com/vuln/432895 cve-icon cve-icon
https://vuldb.com/vuln/432895/cti cve-icon cve-icon
https://www.dlink.com/ cve-icon cve-icon
History

Mon, 09 Nov 2026 04:00:00 +0000

Type Values Removed Values Added
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.
Title D-Link DIR-878 HNAP SetWanSettings buffer overflow
First Time appeared D-link
D-link dir-878
Weaknesses CWE-119
CWE-120
CPEs cpe:2.3:h:d-link:dir-878:*:*:*:*:*:*:*:*
Vendors & Products D-link
D-link dir-878
References
Metrics cvssV2_0

{'score': 7.8, 'vector': 'AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 7.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-11-09T03:45:21.148Z

Reserved: 2026-11-08T14:47:03.001Z

Link: CVE-2026-124563

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-09T04:17:06.773

Modified: 2026-11-09T04:17:06.930

Link: CVE-2026-124563

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-09T05:30:05Z

Weaknesses