Vulnerability · Published Oct 6, 2025 · Assigned by VulDB
CVE-2025-11338D-Link DI-7100G C1 jhttpd login.cgi sub_4C0990 buffer overflow
High 8.8
In plain English
A high-severity buffer overflow in DI-7100G C1 from D-Link. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.0%top 36.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A flaw has been found in D-Link DI-7100G C1 up to 20250928. This vulnerability affects the function sub_4C0990 of the file /webchat/login.cgi of the component jhttpd. Executing manipulation of the argument openid can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| D-Link | DI-7100G C1 | 20250928 |
Weakness: CWE-120, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-327221 | D-Link DI-7100G C1 jhttpd login.cgi sub_4C0990 buffer overflow vdb-entry, technical-description
- VDB-327221 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #664619 | D-Link DI-7100G C1 Buffer Overflow third-party-advisory
- https://www.yuque.com/jh0ng/vmpda6/kggo2ngrcphzvwml exploit
- https://www.dlink.com/ product