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Vulnerability record · CVE-2025-5215 · published 27 May 2025

CVE-2025-5215: Dlink dcs-5020l firmware memory buffer overflow vulnerability

Dlink · Dcs 5020l Firmware

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.

8.7 CVSS 4.0 High EPSS 1.4% · top 29.5% CWE-119 · Memory buffer overflowCWE-121 · Stack-based buffer overflow
8.7CVSS 4.0 base score, v2 9.0
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References, 3 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/xiaobor123/vul-dlink-dcs5020l ExploitThird Party Advisory
https://github.com/xiaobor123/vul-dlink-dcs5020l#poc ExploitThird Party Advisory
https://vuldb.com/?ctiid.310311 Permissions RequiredVDB Entry
https://vuldb.com/?id.310311 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.582935 Third Party AdvisoryVDB Entry
https://www.dlink.com/ Product
https://github.com/xiaobor123/vul-dlink-dcs5020l ExploitThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-5215), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.