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 send…

published 2020-10-20 6y ago modified 2026-06-17 4mo ago also EUVD-2020-25738

cvss: 4.0; 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 21%
public exploits: 0; none known

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.

Patch / fix

links 1

ibm.com/support/pages/node/6349465 advisory

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Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	4.0	CVSS:3.0/I:N/S:U/UI:N/PR:N/AV:L/AC:L/A:L/C:N/E:U/RL:O/RC:C
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA	3.0	4.0	CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

IBM Spectrum Scale

References

ibm.com /support/pages/node/6349465
patch, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/181991
vdb-entry, vendor-advisory

Sources

CVE List CVE-2020-4491
NVD CVE-2020-4491

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