What is CVE-2020-5021?

CVE-2020-5021 is a medium-severity vulnerability in IBM Spectrum Protect Plus, classified under Session Fixation. CVSS score: 4.4/10. Published 2021-01-08.

How severe is CVE-2020-5021?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in IBM Spectrum Protect Plus

CVE-2020-5021

IBM Spectrum Protect Plus 10.1.0 through 10.1.6 does not invalidate session after a password reset which could allow a local user to impersonate another user on the system. IBM X-Force ID: 193657.

Published 2021-01-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (14.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

IBM Spectrum Protect Plus — versions 10.1.0, 10.1.6
IBM Spectrum Protect Plus
Linux Kernel

Weakness classification (CWE)

CWE-384 — Session Fixation

References

www.ibm.com/support/pages/node/6398754 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/193657 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-5021?: CVE-2020-5021 is a medium-severity vulnerability in IBM Spectrum Protect Plus, classified under Session Fixation. CVSS score: 4.4/10. Published 2021-01-08.
How severe is CVE-2020-5021?: Medium severity. CVSS v3 base score is 4.4 out of 10.