CVE-2021-43722

moderate-risk

Published 2022-03-31

D-Link DIR-645 1.03 A1 is vulnerable to Buffer Overflow. The hnap_main function in the cgibin handler uses sprintf to format the soapaction header onto the stack and has no limit on the size.

Do I need to act?

1.4% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (1)

Dir-645 Firmware

Affected Vendors

Dlink

References (4)

Exploit https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md

Vendor Advisory https://www.dlink.com/en/security-bulletin/

Exploit https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md

Vendor Advisory https://www.dlink.com/en/security-bulletin/

/ 100

moderate-risk

Severity 32/34 · Critical

Exploitability 4/34 · Minimal

Exposure 5/34 · Minimal