How severe is CVE-2021-20404?

CVE-2021-20404 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2021-20404 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20404?

CVE-2021-20404 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-2021-20404?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-20404 published?

CVE-2021-20404 was published on 2021-02-11 and last updated on 2026-06-17.

CVE-2021-20404

CVE-2021-20404 is a medium-severity vulnerability in Ibm Security Verify Information Queue with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
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 on the network to cause a denial of service due to an invalid cookie value that could prevent future logins. IBM X-Force ID: 196078.

Frequently asked questions

What is CVE-2021-20404?: IBM Security Verify Information Queue 1.0.6 and 1.0.7 could allow a user on the network to cause a denial of service due to an invalid cookie value that could prevent future logins. IBM X-Force ID: 196078.
How severe is CVE-2021-20404?: CVE-2021-20404 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2021-20404 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20404?: CVE-2021-20404 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-2021-20404?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20404 published?: CVE-2021-20404 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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