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No exploitation reportedAwaiting NVD analysis

CVE-2026-124562

D-Link DIR-878 HNAP SetWanSettings buffer overflow

No exploitation reported by the sources we read.

  • Published2026-11-09
  • WeaknessCWE-119 · CWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2026-11-0903:30CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • D-Link DIR-878
    Affected
    • = 1.20B05no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-09

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-124562 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE record2026-11-09
  • CNACVSS 4.08.72026-11-09
  • CNACVSS 3.17.52026-11-09
  • CNACVSS 3.07.52026-11-09
  • CNACVSS 2.07.82026-11-09
  • CNAweakness (CWE)CWE-119, CWE-1202026-11-09

Technical details

CVSS v3 Vector
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
CVSS 4.0 vector
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
Published
2026-11-09

Frequently asked questions

What is CVE-2026-124562?

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.

Is CVE-2026-124562 actively exploited?

Active exploitation of CVE-2026-124562 has not been confirmed.

What is the CVSS score for CVE-2026-124562?

CVE-2026-124562 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string 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.

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