What’s Vulnerable › Vulnerabilities

CVE-2021-20091

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-29 · updated 2026-06-17

Description

The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 do not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially gaining remote code execution.

Affected products

• Buffalo Wsr-2533Dhp3-Bk Firmware: through 1.24
• Buffalo Wsr-2533Dhpl2-Bk Firmware: through 1.02

References

• https://www.tenable.com/security/research/tra-2021-13
• https://www.tenable.com/security/research/tra-2021-13

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