IBM Spectrum Scale 5.0.0 through 5.0.5.5 and 5.1.0 through 5.1.0.2 uses an inadequate account lockout setting that could allow a local user…

published 2021-03-16 5y ago modified 2026-06-17 4mo ago also EUVD-2020-26138

cvss: 6.2; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

IBM Spectrum Scale 5.0.0 through 5.0.5.5 and 5.1.0 through 5.1.0.2 uses an inadequate account lockout setting that could allow a local user er to brute force Rest API account credentials. IBM X-Force ID: 190974.

Patch / fix

links 1

ibm.com/support/pages/node/6430147 advisory

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Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	6.2	CVSS:3.0/UI:N/AV:L/I:N/C:H/A:N/S:U/PR:N/AC:L/E:U/RC:C/RL:O
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA	3.0	6.2	CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

IBM Spectrum Scale

Classification

Weakness

CWE-307 Improper Restriction of Excessive Authentication Attempts

References

ibm.com /support/pages/node/6430147
patch, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/190974
vdb-entry, vendor-advisory

Sources

CVE List CVE-2020-4891
NVD CVE-2020-4891

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