CVE-2026-124563
D-Link DIR-878 HNAP SetWanSettings buffer overflow
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| DIR-878 D-Link |
1.20B05 (affected) | CNA: VulDB |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
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 | CNA: VulDB |
| 3.1 / 7.5 high |
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 | CNA: VulDB |
| 3.0 / 7.5 high |
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 | CNA: VulDB |
| 2.0 / 7.8 high |
AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:ND/RC:UR | CNA: VulDB |
Exploit evidence
References
- https://vuldb.com/vuln/432895CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/432895/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-124563CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1035619CNA: VulDB · third-party-advisory
- https://github.com/Zimo-666/DIR-878-cves/tree/main/05-setwansettings-l2tp-pptp-dns-overflowCNA: VulDB · broken-link, exploit
- https://www.dlink.com/CNA: VulDB · product
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