What’s Vulnerable › Vulnerabilities

CVE-2021-27209

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-13 · updated 2026-06-17
• Weakness: CWE-319

Description

In the management interface on TP-Link Archer C5v 1.7_181221 devices, credentials are sent in a base64 format over cleartext HTTP.

Affected products

• TP-Link Archer C5V Firmware: 1.7_181221

References

• https://gokay.org/tp-link-archer-c5v-base64-cookie/
• https://gokay.org/tp-link-archer-c5v-base64-cookie/

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