D-Link Routers Buffer Overflow Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-12-08
• EPSS: 56% chance of exploitation in the next 30 days (higher than 99% of CVEs)
• Critical severity: CVSS 9.8

[ Description ]Official description

D-Link Go-RT-AC750 GORTAC750_revA_v101b03 and GO-RT-AC750_revB_FWv200b02 are vulnerable to Buffer Overflow via cgibin, hnap_main,

CISA: D-Link Routers contains a buffer overflow vulnerability that has a high impact on confidentiality, integrity, and availability. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 29 Dec 2025): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

• Patch on drive.google.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• drive.google.com/file/d/1hmIk0jQoex4QDyjIUg_6yxi-J6ROCh8S/viewExploitPatchThird Party Advisory
• supportannouncement.us.dlink.com/security/publication.aspxVendor Advisory
• www.dlink.com/en/security-bulletinVendor Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource
• www.fortiguard.com/outbreak-alert/d-link-multiple-devices-attackThird Party Advisory