EUVD-2026-83792
GHSA-pc7v-4cmj-hg88
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
Pre-auth network overflow in a self-contained CGI with no privilege separation, so PR:N/AC:L and full C/I/A:H, but S:U because it does not cross to a separate security authority.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
4DescriptionCVE.org
A vulnerability was determined in D-Link DIR-868L 2.01b05. This issue affects the function strcpy of the file /webfa_authentication.cgi of the component Authentication Handler. Executing a manipulation of the argument id/password can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
Articles & Coverage 1
AnalysisAI
Pre-authentication stack-based buffer overflow in the D-Link DIR-868L router running firmware 2.01b05 allows remote attackers to corrupt memory by sending crafted values in the id or password parameters to /webfa_authentication.cgi, potentially leading to crash or arbitrary code execution on the device. The attack requires only network reachability to the router's HTTP management interface, with no authentication or user interaction (PR:N/UI:N per both the vendor-supplied CVSS 4.0 vector and our independent CVSS 3.1 assessment). …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
No credit card · 7-day full trial
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires network reachability to the router's HTTP management interface serving /webfa_authentication.cgi; no authentication and no user interaction are needed (PR:N/UI:N), and the id/password parameters are attacker-controlled pre-authentication. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals conflict sharply and warrant caution. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch was identified at time of analysis: the reference set contains only the VulDB entries and the generic D-Link homepage, with no fixed firmware version or model-specific advisory supplied, so operators must confirm support status and any forthcoming DIR-868L firmware release directly at https://www.dlink.com/ and via the VulDB record at https://vuldb.com/vuln/408017 before assuming a fix is available. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all D-Link DIR-868L devices running firmware 2.01b05, immediately disable remote management and block WAN access to the HTTP management interface (ports 80/443), and restrict administrative access to trusted internal management VLANs or specific admin IPs. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-121 – Stack-based Buffer Overflow
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today