CVE-2025-13188

D-Link Dir-816l Firmware buffer overflow

9.8 CRITICALPublic exploitEPSS 2.44%

Published14 Nov 2025

Description

A vulnerability was detected in D-Link DIR-816L 2_06_b09_beta. Affected by this vulnerability is the function authenticationcgi_main of the file /authentication.cgi. Performing manipulation of the argument Password results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit is now public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

D-Link Dir-816l Firmware2.06.b09

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

https://github.com/scanleale/IOT_sec/blob/main/DIR-816L%20stack%20overflow(authentication.cgi).pdfExploitThird Party Advisory
https://vuldb.com/?ctiid.332476Permissions RequiredVDB Entry
https://vuldb.com/?id.332476Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.685538Third Party AdvisoryVDB Entry
https://www.dlink.com/Product

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2025-13188 being actively exploited?

CVE-2025-13188 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 2.44%.

How severe is CVE-2025-13188?

CVE-2025-13188 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.44% probability of exploitation.

Which products are affected by CVE-2025-13188?

Affected products include D-Link Dir-816l Firmware.

How do I fix CVE-2025-13188?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-13188 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.