CVE-2026-86509CWE-119CWE-121

CVE-2026-86509

Critical · published September 8, 2026

CVSS v3.1
9.6
EPSS
1%
Percentile
53.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
9.4 · CVSS: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
EPSS
0.00722 · 53.5th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-09-08T05:17Z
References (6)
https://tzh00203.notion.site/D-Link-DIR-895L-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80dc8140e1502e4814d0 · [email protected]https://vuldb.com/cve/CVE-2026-86509 · [email protected]https://vuldb.com/submit/906298 · [email protected]https://vuldb.com/vuln/399662 · [email protected]https://vuldb.com/vuln/399662/cti · [email protected]https://www.dlink.com/ · [email protected]
EPSS history
Timeline
  • 09 SEP 03:20Z
    EPSS moved — → 0%
    epss
  • 08 SEP 00:45Z
    D-Link DIR-895L udhcpcd serverpacket.c sendACK stack-based overflow
    cvelistv5