CVE-2026-86509: D-Link DIR-895L udhcpcd serverpacket.c sendACK stack-based overflow

Severity: critical (CVSS 9.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-08 · updated 2026-09-11
Weakness: CWE-119

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.

Affected products

D-Link DIR-895L: A1_102b07

References

https://tzh00203.notion.site/D-Link-DIR-895L-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80dc8140e1502e4814d0
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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