CVE-2026-124561

HIGH 7.5

D-Link DIR-878 HNAP prog.cgi SetVLANSettings stack-based overflow

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was determined in D-Link DIR-878 1.20B05. This impacts the function SetVLANSettings of the file prog.cgi of the component HNAP Handler. Executing a manipulation of the argument VID can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.

CWE	CWE-121 CWE-119
Vendor	d-link
Product	dir-878
Published	Nov 9, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

D-Link / DIR-878

1.20B05

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/432893 vuldb.com: https://vuldb.com/vuln/432893/cti vuldb.com: https://vuldb.com/cve/CVE-2026-124561 vuldb.com: https://vuldb.com/submit/1035617 github.com: https://github.com/Zimo-666/DIR-878-cves/tree/main/03-settriggeradic-vlan-stack-overflow dlink.com: https://www.dlink.com/

Credits

🔍 ha ha-yang (VulDB User)