CVE-2021-20090

high-risk
Published 2021-04-29

A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.

Do I need to act?

!
94.4% chance of exploitation in next 30 days
EPSS score — higher than 6% of all CVEs
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Buffalo

References (7)

Third Party Advisory https://www.kb.cert.org/vuls/id/914124
Exploit https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-explo...
Exploit https://www.tenable.com/security/research/tra-2021-13
Third Party Advisory https://www.kb.cert.org/vuls/id/914124
Exploit https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-explo...
Exploit https://www.tenable.com/security/research/tra-2021-13
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
66
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 27/34 · High
Exposure 7/34 · Low