CVE-2026-124562
D-Link DIR-878 HNAP SetWanSettings buffer overflow
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.
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/432894CNA: VulDB · vdb-entry, technical-description
- https://vuldb.com/vuln/432894/ctiCNA: VulDB · signature, permissions-required
- https://vuldb.com/cve/CVE-2026-124562CNA: VulDB · third-party-advisory
- https://vuldb.com/submit/1035618CNA: VulDB · third-party-advisory
- https://github.com/Zimo-666/DIR-878-cves/tree/main/02-setwansettings-dns-stack-overflowCNA: VulDB · broken-link, exploit
- https://www.dlink.com/CNA: VulDB · product
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