Vulnerability · Published May 5, 2026 · Assigned by VulDB
CVE-2026-7857D-Link DI-8100 CGI user_group.asp sprintf buffer overflow
High 7.2
In plain English
A high-severity buffer overflow in DI-8100 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 4.2% (higher than 91% of all known vulnerabilities).
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)4.2%top 9.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability has been found in D-Link DI-8100 16.07.26A1. This vulnerability affects the function sprintf of the file /user_group.asp of the component CGI Handler. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Affected products (as reported)
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-361134 | D-Link DI-8100 CGI user_group.asp sprintf buffer overflow vdb-entry, technical-description
- VDB-361134 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #807853 | D-Link DI-8100 16.07.26A1 Denial of Service third-party-advisory
- https://github.com/draw-ctf/report/blob/main/DI-8100/user_group_asp_overflow.md exploit
- https://www.dlink.com/ product