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

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-06-16 · updated 2026-06-17
Weakness: CWE-119

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

D-Link DIR-632: 103b08

References

https://github.com/xiaobor123/vul-finds/tree/main/vul-find-dir632-dlink-get_pure_content
https://github.com/xiaobor123/vul-finds/tree/main/vul-find-dir632-dlink-get_pure_content#poc
https://vuldb.com/?ctiid.312590
https://vuldb.com/?id.312590
https://vuldb.com/?submit.592574
https://www.dlink.com/

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