What’s Vulnerable › Vulnerabilities

CVE-2021-44622

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-03-10 · updated 2026-06-17
• Weakness: CWE-120

Description

A Buffer Overflow vulnerability exists in TP-LINK WR-886N 20190826 2.3.8 in the /cloud_config/router_post/check_reg_verify_code function which could let a remove malicious user execute arbitrary code via a crafted post request.

Affected products

• TP-Link Tl-Wr886N Firmware: 20190826_2.3.8

References

• https://github.com/Yu3H0/IoT_CVE/tree/main/886N/chkRegVeriRegister
• https://github.com/Yu3H0/IoT_CVE/tree/main/886N/chkRegVeriRegister

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