Vulnerability · Published Sep 20, 2026 · Assigned by VulDB

CVE-2026-94089D-Link DIR-868L Authentication webfa_authentication.cgi strcpy stack-based overflow

Critical 10.0

In plain English

A critical-severity stack buffer overflow in DIR-868L from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).

Severity (CVSS 3.1)10.0Critical

Exploit odds (30 days)1.0%top 37.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
D-Link	DIR-868L	2.01b05

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-408017 | D-Link DIR-868L Authentication webfa_authentication.cgi strcpy stack-based overflow vdb-entry, technical-description
VDB-408017 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-94089 | CVE Analysis and Report third-party-advisory
Submit #951681 | D-Link DIR-868L B1 Stack-based Buffer Overflow third-party-advisory
https://github.com/Walnut1337/CVE/blob/main/poc/poc_crash.py exploit
https://www.dlink.com/ product