Critical severity · published Sep 7, 2026
CVE-2026-86296
D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflow
10.0
CVSS
2.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
DIR-822A · D-Link
A_101 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86296
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86296
tzh00203.notion.site
https://tzh00203.notion.site/D-Link-DIR-822A-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80238b80e89e7c7c68f0
vuldb.com
https://vuldb.com/cve/CVE-2026-86296
vuldb.com
https://vuldb.com/submit/906297
vuldb.com
https://vuldb.com/vuln/399458
vuldb.com
https://vuldb.com/vuln/399458/cti
www.dlink.com
https://www.dlink.com/
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