CVE-2020-4491: IBM Spectrum Scale

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

IBM Spectrum Scale V4.2.0.0 through V4.2.3.22 and V5.0.0.0 through V5.0.5 could allow a local attacker to cause a denial of service by sending a large number of RPC requests to the mmfsd daemon which would cause the service to crash. IBM X-Force ID: 181991.

Affected products

• IBM Spectrum Scale: after 4.2.0.0, up to and including 4.2.3.22; after 5.0.0.0, up to and including 5.0.5

Published 2020-10-20. Last modified 2026-06-17.