How severe is CVE-2021-20557?

CVE-2021-20557 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-20557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20557?

CVE-2021-20557 affects Ibm Security Guardium. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20557?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-20557 published?

CVE-2021-20557 was published on 2021-05-24 and last updated on 2026-06-17.

CVE-2021-20557

CVE-2021-20557 is a high-severity vulnerability in Ibm Security Guardium with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Ibm Security Guardium
Published: 2021-05-24
Last modified: 2026-06-17

Description

IBM Security Guardium 11.2 could allow a remote authenticated attacker to execute arbitrary commands on the system by sending a specially crafted request. IBM X-Force ID: 199184.

Frequently asked questions

What is CVE-2021-20557?: IBM Security Guardium 11.2 could allow a remote authenticated attacker to execute arbitrary commands on the system by sending a specially crafted request. IBM X-Force ID: 199184.
How severe is CVE-2021-20557?: CVE-2021-20557 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-20557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20557?: CVE-2021-20557 affects Ibm Security Guardium. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-20557 published?: CVE-2021-20557 was published on 2021-05-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:security_guardium:11.2:*:*:*:*:*:*:*

More vulnerabilities in Ibm Security Guardium

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