CVE-2026-124563: high-severity vulnerability in D-Link DIR-878
D-Link DIR-878 HNAP SetWanSettings buffer overflow
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
18Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7
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.
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
Affected products
D-Link · DIR-878Related CVEs — D-Link DIR-878
In the same product, most dangerous first.
CVE-2024-0717MEDIUMD-Link Good Line Router v2 HTTP GET Request devinfo information disclosureEPSS 18.2%CVE-2022-26670HIGHD-Link DIR-878 - Command InjectionEPSS 1.5%CVE-2025-0481MEDIUMD-Link DIR-878 HTTP POST Request dllog.cgi information disclosureEPSS 1.4%CVE-2026-90693CRITICALD-Link DIR-878 WAN Settings SetWan3Settings stack-based overflowEPSS 0.9%CVE-2026-90692CRITICALD-Link DIR-878 Dynamic DNS IPv6 Settings SetDynamicDNSIPv6Settings stack-based overflowEPSS 0.9%CVE-2026-124564MEDIUMD-Link DIR-878 HNAP prog.cgi GetListDirectory path traversalEPSS —