D-Link DIR-878 HNAP prog.cgi SetVLANSettings stack-based overflow
CVSS score
8.7
EPSS probability
—
Risk score
0.9
Published
4 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
A stack-based buffer overflow vulnerability affects D-Link DIR-878 version 1.20B05, specifically within the SetVLANSettings function of the prog.cgi file in the HNAP Handler component. Manipulating the VID argument can lead to a stack-based buffer overflow, and the exploit has been publicly disclosed.
This flaw allows remote attacks without authentication and features publicly disclosed exploit code, posing active risk to vulnerable units. The issue only affects products that are no longer supported by the maintainer.
What should be done?
- Follow vendor advisories
- Check for any available updates for the affected component
- Assess risks considering the product is no longer maintained
Chain of evidence and sources
D-Link DIR-878 1.20B05 sürümündeki HNAP Handler bileşeni, prog.cgi dosyasının SetVLANSettings fonksiyonunda yığın tabanlı tampon taşmasına karşı savunmasızdır.
VID argümanının manipülasyonu uzaktan gerçekleştirilebilir ve istismar kodu kamuya açıklanmıştır.
Zafiyet yalnızca üreticisi tarafından artık desteklenmeyen ürünleri etkilemektedir.
Show the technical text from the sources
A vulnerability was determined in D-Link DIR-878 1.20B05. This impacts the function SetVLANSettings of the file prog.cgi of the component HNAP Handler. Executing a manipulation of the argument VID can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.
CVSS 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
CWE: CWE-121, CWE-119
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-124561 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | d-link | DIR-878 | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.7 | CVSS V4_0 | 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 | CVE CNA |
| 7.8 | CVSS V2_0 | — | AV:N/AC:L/Au:N/C:N/I:N/A:C/E:POC/RL:ND/RC:UR | CVE CNA |
| 7.8 | CVSS V2 | — | AV:N/AC:L/Au:N/C:N/I:N/A:C | NVD |
| 7.7 | CVSS V40 | 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
| 7.5 | CVSS V3_1 | 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 | CVE CNA |
| 7.5 | CVSS V3_0 | 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 | CVE CNA |
| 7.5 | CVSS V31 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-124561 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-124561 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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