How severe is CVE-2021-20405?

CVE-2021-20405 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-20405 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20405?

CVE-2021-20405 primarily affects Ibm Security Verify Information Queue. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-20405?

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-2021-20405 published?

CVE-2021-20405 was published on 2021-02-11 and last updated on 2026-06-17.

CVE-2021-20405

CVE-2021-20405 is a high-severity vulnerability in Ibm Security Verify Information Queue with a CVSS 3.x base score of 7.5. 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-116.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-116
Affected product: Ibm Security Verify Information Queue
Published: 2021-02-11
Last modified: 2026-06-17

Description

IBM Security Verify Information Queue 1.0.6 and 1.0.7 could allow a user to perform unauthorized activities due to improper encoding of output. IBM X-Force ID: 196183.

Frequently asked questions

What is CVE-2021-20405?: IBM Security Verify Information Queue 1.0.6 and 1.0.7 could allow a user to perform unauthorized activities due to improper encoding of output. IBM X-Force ID: 196183.
How severe is CVE-2021-20405?: CVE-2021-20405 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-20405 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20405?: CVE-2021-20405 primarily affects Ibm Security Verify Information Queue. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-20405?: 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-2021-20405 published?: CVE-2021-20405 was published on 2021-02-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:security_verify_information_queue:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:security_verify_information_queue:1.0.7:*:*:*:*:*:*:*

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