Vulnerability · Published May 27, 2025 · Assigned by VulDB

CVE-2025-5215D-Link DCS-5020L ptdc.cgi websReadEvent stack-based overflow

High 8.8

In plain English

A high-severity stack buffer overflow in DCS-5020L from D-Link. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.5%top 25.3% 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 DCS-5020L 1.01_B2. This affects the function websReadEvent of the file /rame/ptdc.cgi. The manipulation of the argument Authorization 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	DCS-5020L	1.01_B2

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

References

VDB-310311 | D-Link DCS-5020L ptdc.cgi websReadEvent stack-based overflow vdb-entry, technical-description
VDB-310311 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #582935 | dlink dcs-5020l FIRMWARE_1.01_B2 stack-based buffer overflow third-party-advisory
https://github.com/xiaobor123/vul-dlink-dcs5020l related
https://github.com/xiaobor123/vul-dlink-dcs5020l#poc exploit
https://www.dlink.com/ product