Vulnerability · Published Jul 25, 2025 · Assigned by VulDB

CVE-2025-8159D-Link DIR-513 HTTP POST Request formLanguageChange 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 20.6% (higher than 98% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)20.6%top 2.5% 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. This issue affects the function formLanguageChange of the file /goform/formLanguageChange of the component HTTP POST Request Handler. The manipulation of the argument curTime leads to stack-based buffer overflow. The attack may be initiated 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-317573 | D-Link DIR-513 HTTP POST Request formLanguageChange stack-based overflow vdb-entry, technical-description
VDB-317573 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #620604 | D-Link DIR-513 v1.0 Buffer Overflow third-party-advisory
https://github.com/boyslikesports/vul/blob/main/formLanguageChange.md exploit
https://www.dlink.com/ product