Vulnerability · Published Jun 16, 2025 · Assigned by VulDB

CVE-2025-6121D-Link DIR-632 HTTP POST Request get_pure_content stack-based overflow

Critical 9.8

In plain English

A critical-severity stack buffer overflow in DIR-632 from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.8% (higher than 86% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)2.8%top 13.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability, which was classified as critical, has been found in D-Link DIR-632 FW103B08. Affected by this issue is the function get_pure_content of the component HTTP POST Request Handler. The manipulation of the argument Content-Length 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-632	FW103B08

Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-312590 | D-Link DIR-632 HTTP POST Request get_pure_content stack-based overflow vdb-entry, technical-description
VDB-312590 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #592574 | dlink DIR-632 FW103B08 Stack-based buffer overflow third-party-advisory
https://github.com/xiaobor123/vul-finds/tree/main/vul-find-dir632-dlink-get_pure_content related
https://github.com/xiaobor123/vul-finds/tree/main/vul-find-dir632-dlink-get_pure_content#poc exploit
https://www.dlink.com/ product