CVE-2025-13188

D-Link DIR-816L authentication.cgi authenticationcgi_main stack-based overflow

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.

Affected

D-Link · DIR-816L

CVSS v4.0 VULDB

8.9 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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:X/V:X/RE:X/U:X

CVSS v3.1 VULDB

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

CVSS v2.0 VULDB

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

2.39% chance of exploitation in the next 30 days, 84th percentile

Published

2025-11-14

Updated

2025-11-17

Proof-of-concept exploits (1)

• scanleale/IOT_sec/blob/main/DIR-816L%20stack%20overflow(authentication.cgi).pdf1★ · 2026-08-17

Security advisories

• https://vuldb.com/?id.332476
• https://vuldb.com/?submit.685538
• https://www.dlink.com

References

• CVE Record
• NVD entry

Related

• CVE-2025-10689
• CVE-2025-10779
• CVE-2025-13189
• CVE-2025-13190
• CVE-2025-13191
• CVE-2025-9727