9.1

CVE-2021-20399: ibm qradar_security_information_and_event_manager

CVSS: 9.1v3.1CriticalModified
Published 27-07-2021Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2021-20399 is a critical (CVSS 9.1) vulnerability in ibm qradar_security_information_and_event_manager. EPSS estimates a 1.79% chance of exploitation in the next 30 days, higher than 78% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
1.79%
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. 27-07-2021
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

IBM Qradar SIEM 7.3.0 to 7.3.3 Patch 8 and 7.4.0 to 7.4.3 GA is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 196073.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

1.79%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

0.00 pp

From 1.79% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.79%

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

Ibm2 products
  • qradar_security_information_and_event_manager≥ 7.3.0, < 7.3.3 | ≥ 7.4.0, < 7.4.3 | 7.3.3 | 7.3.3:p1 | 7.3.3:p2 | 7.3.3:p3 | 7.3.3:p4 | 7.3.3:p5 | 7.3.3:p6 | 7.3.3:p7 | 7.3.3:p8 | 7.4.3 | 7.4.3:fix_pack_1 | 7.4.3:fix_pack_2 | 7.4.3:fix_pack_3
  • qradar siem7.3.0 | 7.4.0 | 7.4.3 | 7.3.3.Patch.8

1 vendor · 2 products

References

2 links