CVE-2021-20546: IBM Spectrum Protect Client

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

IBM Spectrum Protect Client 8.1.0.0 through 8.1.11.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local attacker could overflow a buffer and cause the application to crash. IBM X-Force ID: 198934

Affected products

• IBM Spectrum Protect Client: from 8.1.0.0, up to and including 8.1.11.0
• IBM Spectrum Protect For Space Management: from 8.1.0.0, up to and including 8.1.11.0

Published 2021-04-26. Last modified 2026-06-17.