CVE-2025-11338

D-Link DI-7100G C1 jhttpd login.cgi sub_4C0990 buffer overflow

A flaw has been found in D-Link DI-7100G C1 up to 20250928. This vulnerability affects the function sub_4C0990 of the file /webchat/login.cgi of the component jhttpd. Executing manipulation of the argument openid can lead to buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.

Affected

D-Link · DI-7100G C1

CVSS v4.0 VULDB

7.4 HIGHCVSS: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: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 NVD

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

CVSS v3.1 VULDB

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

CVSS v2.0 VULDB

9.0 HIGHAV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS

1.00% chance of exploitation in the next 30 days, 62nd percentile

Published

2025-10-06

Proof-of-concept exploits (1)

• https://www.yuque.com/jh0ng/vmpda6/kggo2ngrcphzvwml

Security advisories

• https://vuldb.com/?id.327221
• https://vuldb.com/?submit.664619
• https://www.dlink.com

References

• CVE Record
• NVD entry