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Vulnerability record · CVE-2026-86509 · published 8 September 2026

CVE-2026-86509: Memory buffer overflow vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.72% · top 47.9% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred
8.6CVSS 4.0 base score, v2 8.3
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
11 Sep 2026Last modified by NVD

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: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:

References

LinkTags
https://tzh00203.notion.site/D-Link-DIR-895L-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80dc8140e150
https://vuldb.com/cve/CVE-2026-86509
https://vuldb.com/submit/906298
https://vuldb.com/vuln/399662
https://vuldb.com/vuln/399662/cti
https://www.dlink.com/

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Source: NIST National Vulnerability Database (record CVE-2026-86509), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.