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Vulnerability record · CVE-2026-86296 · published 7 September 2026

CVE-2026-86296: Memory buffer overflow vulnerability

A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

9.3 CVSS 4.0 Critical EPSS 1.7% · top 23.8% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow Deferred
9.3CVSS 4.0 base score, v2 10.0
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
8 Sep 2026Last modified by NVD

Description

A vulnerability was determined in D-Link DIR-822A A_101. This vulnerability affects the function strcpy of the file udhcpcd/serverpacket.c of the component udhcpcd. This manipulation causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

CVSS:4.0/AV:N/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-822A-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80238b80e89e
https://vuldb.com/cve/CVE-2026-86296
https://vuldb.com/submit/906297
https://vuldb.com/vuln/399458
https://vuldb.com/vuln/399458/cti
https://www.dlink.com/

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Source: NIST National Vulnerability Database (record CVE-2026-86296), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.