CVE-2026-86296CWE-119CWE-121

CVE-2026-86296

Critical · published September 7, 2026

CVSS v3.1
10.0
EPSS
2%
Percentile
77.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
10.0 · 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
EPSS
0.01698 · 77.0th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-09-07T15:17Z
References (6)
https://tzh00203.notion.site/D-Link-DIR-822A-Stack-Overflow-in-udhcpd-TR-111-Option-125-Parsing-33cb5c52018a80238b80e89e7c7c68f0 · [email protected]https://vuldb.com/cve/CVE-2026-86296 · [email protected]https://vuldb.com/submit/906297 · [email protected]https://vuldb.com/vuln/399458 · [email protected]https://vuldb.com/vuln/399458/cti · [email protected]https://www.dlink.com/ · [email protected]
EPSS history
Timeline
  • 09 SEP 03:20Z
    EPSS moved — → 1%
    epss
  • 07 SEP 10:30Z
    D-Link DIR-822A udhcpcd serverpacket.c strcpy stack-based overflow
    cvelistv5