Vulnerability · Published Jul 20, 2025 · Assigned by VulDB

CVE-2025-7909D-Link DIR-513 Boa Webserver formLanSetupRouterSettings sprintf stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in DIR-513 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.7%top 22.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in D-Link DIR-513 1.0. It has been rated as critical. Affected by this issue is the function sprintf of the file /goform/formLanSetupRouterSettings of the component Boa Webserver. The manipulation of the argument curTime leads to stack-based buffer overflow. The attack may be launched 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-513	1.0

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-317024 | D-Link DIR-513 Boa Webserver formLanSetupRouterSettings sprintf stack-based overflow vdb-entry, technical-description
VDB-317024 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #618593 | D-Link DIR-513 V1.0 Buffer Overflow third-party-advisory
https://github.com/buobo/bo-s-CVE/blob/main/DIR-513/formLanSetupRouterSettings.md exploit
https://www.dlink.com/ product