What’s Vulnerable › Vulnerabilities

CVE-2021-43722

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-03-31 · updated 2026-06-17
• Weakness: CWE-787

Description

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.

Affected products

• D-Link DIR-645: 1.03

References

• https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md
• https://www.dlink.com/en/security-bulletin/
• https://github.com/luqiut/iot/blob/main/DIR-645%20Stack%20overflow.md
• https://www.dlink.com/en/security-bulletin/

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