6.5

CVE-2020-4320: ibm mq Improper Certificate Validation

CVSS: 6.5v3.1MediumModified
Published 16-06-2020Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2020-4320 is a medium (CVSS 6.5) Improper Certificate Validation vulnerability in ibm mq. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 53.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.72%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 16-06-2020
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

IBM MQ Appliance and IBM MQ AMQP Channels 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD do not correctly block or allow clients based on the certificate distinguished name SSLPEER setting. IBM X-Force ID: 177403.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

0.00 pp

From 0.72% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.72%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ibm1 product
  • mqEOL8.0 | 9.0.LTS | 9.1.LTS | 9.1.CD | ≥ 8.0.0.0, < 8.0.0.15 | ≥ 9.0.0.0, < 9.0.0.10 | ≥ 9.1.0, < 9.1.5 | ≥ 9.1.0.0, < 9.1.0.5

1 vendor · 1 product

References

2 links