D-Link DIR-878: Buffer overflow in HNAP Handler (CVE-2026-124562)
A buffer overflow vulnerability exists in the HNAP Handler component of the D-Link DIR-878 (version 1.20B05), reachable via remote attack.
CVE search metadata
CVE search record: CVE-2026-124562. Severity: high. CVSS: 7.5. KEV: no. Product: DIR-878 (1.20B05). Brief: D-Link DIR-878: Buffer overflow in HNAP Handler (CVE-2026-124562). Brief link: https://feed.craftedsignal.io/briefs/2026-11-dlink-dir878-overflow-8c31ac61/
Triage facts
Revision 1- Applicability
- DIR-878 (1.20B05)
- Evidence
- Unknown
- Severity
- Low
- Sources
- 1 public source
- Freshness
- Revision 1Nov 9, 07:31 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
A vulnerability was identified in the SetWanSettings function of the HNAP Handler component in D-Link DIR-878 version 1.20B05. Manipulation of the ConfigDNS/Primary or ConfigDNS/Secondary arguments leads to a buffer overflow. This vulnerability is remotely exploitable. The exploit is publicly available and might be used. The affected product is no longer supported by the maintainer.