Vulnerability · Published Jun 17, 2025 · Assigned by VulDB

CVE-2025-6158D-Link DIR-665 HTTP POST Request sub_AC78 stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in DIR-665 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.2%top 31.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability classified as critical has been found in D-Link DIR-665 1.00. This affects the function sub_AC78 of the component HTTP POST Request Handler. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

Affected products (as reported)

Vendor	Product	Versions
D-Link	DIR-665	1.00

Weakness: CWE-121, 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-312633 | D-Link DIR-665 HTTP POST Request sub_AC78 stack-based overflow vdb-entry, technical-description
VDB-312633 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #593161 | dlink DIR-665 1.00 Stack-based Buffer Overflow third-party-advisory
https://github.com/xiaobor123/vul-finds/tree/main/vul-find-dir665-dlink related
https://github.com/xiaobor123/vul-finds/tree/main/vul-find-dir665-dlink#poc exploit
https://www.dlink.com/ product