CVE-2026-124562

HIGH 7.5

D-Link DIR-878 HNAP SetWanSettings buffer overflow

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was identified in D-Link DIR-878 1.20B05. Affected is the function SetWanSettings of the component HNAP Handler. The manipulation of the argument ConfigDNS/Primary/ConfigDNS/Secondary leads to buffer overflow. The attack may be initiated remotely. The exploit is publicly available and might be used. This vulnerability only affects products that are no longer supported by the maintainer.

CWE	CWE-120 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/432894 vuldb.com: https://vuldb.com/vuln/432894/cti vuldb.com: https://vuldb.com/cve/CVE-2026-124562 vuldb.com: https://vuldb.com/submit/1035618 github.com: https://github.com/Zimo-666/DIR-878-cves/tree/main/02-setwansettings-dns-stack-overflow dlink.com: https://www.dlink.com/

Credits

🔍 ha ha-yang (VulDB User)