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CVE-2020-4891

20
FAUCET Score

CVE-2020-4891 describes an inadequate account lockout setting in IBM Spectrum Scale versions 5.0.0 through 5.0.5.5 and 5.1.0 through 5.1.0.2. This vulnerability allows a local attacker to brute force REST API account credentials due to the lack of sufficient lockout mechanisms. With a CVSS v3.1 score of 5.5 (Medium), the attack requires local access and low privileges, but successful exploitation could lead to high confidentiality impact by compromising user accounts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0.0.0, <= 5.0.5.5CPE matchmatch criteria
cpe:2.3:a:ibm:spectrum_scale:*:*:*:*:*:*:*:*
>= 5.1.0.0, <= 5.1.0.2CPE matchmatch criteria
cpe:2.3:a:ibm:spectrum_scale:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.2MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.5
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
15.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 66th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/190974
VDB EntryVendor Advisory
ibm.com / support/pages/node/6430147
PatchVendor Advisory