CVE-2026-86296
D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflow
- State
- Published
- Severity
- 10.0 Critical
- Published
- Sep 7, 2026
- Updated
- Sep 8, 2026
- Reserved
- Sep 6, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 10.0 Critical | 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 | VulDB |
| 3.1 | 10.0 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 3.0 | 10.0 Critical | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R | VulDB |
| 2.0 | 10.0 High | AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
DIR-822AD-Link |
|
References
- VDB-399458 | D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflowvdb-entrytechnical-description
- VDB-399458 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-86296 | CVE Analysis and Reportthird-party-advisory
- Submit #906297 | D-Link DIR822A_101 A_101 Stack-based Buffer Overflowthird-party-advisory
- https://tzh00203.notion.site/D-Link-DIR-822A-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80238b80e89e7c7c68f0exploit
- https://www.dlink.com/product
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