CVE-2021-20091

8.8 highEPSS 8.5%

High (8.8) in buffalo. EPSS 8.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 8.5% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-31)
Published: 2021-04-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

buffalo:wsr-2533dhp3-bk_firmware
buffalo:wsr-2533dhpl2-bk_firmware

References

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

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