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Fencer Vulns
medium 5.3

CVE-2020-4592 json

IBM MQ Appliance 9.1.CD and LTS could allow an authenticated user, under nondefault configuration to cause a data corruption attack due to…

published 2020-11-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25839

cvss
5.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

IBM MQ Appliance 9.1.CD and LTS could allow an authenticated user, under nondefault configuration to cause a data corruption attack due to an error when using segmented messages.

Patch / fix

Exploit prediction

0.79% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.3 CVSS:3.0/PR:L/AV:N/AC:H/S:U/UI:N/I:H/C:N/A:N/RL:O/RC:C/E:U
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

  • IBM MQ Appliance

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.