CVE-2026-86509

Received

Published: 08 Sept 2026, 00:45

Last modified:08 Sept 2026, 00:45

Vulnerability Summary

Overall Risk (default)

high

70/100

CVSS Score

9.6 CRITICAL

v3.1 (cve.org)

EPSS Score

No data

KEV

Not listed

Ransomware

No reports

Public exploits

1 found

Dark Web

Not detected

Timeline

08 Sept 2026, 00:45

Published

Vulnerability first disclosed

Description

A flaw has been found in D-Link DIR-895L A1_102b07. This impacts the function sendOffer/sendACK of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack can only be done within the local network. The exploit has been published and may be used.

CVSS Metrics

v4.0•CRITICAL•Score: 9.4CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
v4.0•HIGH•Score: 8.6CVSS:4.0/AV:A/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
v3.1•CRITICAL•Score: 9.6CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
v3.1•CRITICAL•Score: 9.6CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
v3.0•CRITICAL•Score: 9.6CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
v2.0•HIGH•Score: 8.3AV:A/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
v2.0•HIGH•Score: 8.3AV:A/AC:L/Au:N/C:C/I:C/A:C

Techniques & Countermeasures

CWE-119•Improper Restriction of Operations within the Bounds of a Memory Buffer
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
CWE-121•Stack-based Buffer Overflow
A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Affected Systems

d-link•dir-895l
A1_102b07