How severe is CVE-2021-20411?

CVE-2021-20411 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-20411 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20411?

CVE-2021-20411 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-2021-20411?

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-2021-20411 published?

CVE-2021-20411 was published on 2021-02-12 and last updated on 2026-06-17.

CVE-2021-20411

CVE-2021-20411 is a high-severity vulnerability in Ibm Security Verify Information Queue with a CVSS 3.x base score of 8.1. 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-669.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 4.8
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-669
Affected product: Ibm Security Verify Information Queue
Published: 2021-02-12
Last modified: 2026-06-17

Description

IBM Security Verify Information Queue 1.0.6 and 1.0.7 could allow a user to impersonate another user on the system due to incorrectly updating the session identifier. IBM X-Force ID: 198191.

Frequently asked questions

What is CVE-2021-20411?: IBM Security Verify Information Queue 1.0.6 and 1.0.7 could allow a user to impersonate another user on the system due to incorrectly updating the session identifier. IBM X-Force ID: 198191.
How severe is CVE-2021-20411?: CVE-2021-20411 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-20411 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20411?: CVE-2021-20411 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-2021-20411?: 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-2021-20411 published?: CVE-2021-20411 was published on 2021-02-12 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:*:*:*:*:*:*:*

More vulnerabilities in Ibm Security Verify Information Queue

CVE-2022-35286 — High (CVSS 8.8): IBM Security Verify Information Queue 10.0.2 is vulnerable to cross-site request forgery which could allow an attacker…
CVE-2022-35285 — High (CVSS 8.8): IBM Security Verify Information Queue 10.0.2 is vulnerable to cross-site request forgery which could allow an attacker…
CVE-2021-20403 — High (CVSS 8.8): IBM Security Verify Information Queue 1.0.6 and 1.0.7 is vulnerable to cross-site request forgery which could allow an…
CVE-2022-35287 — High (CVSS 7.5): IBM Security Verify Information Queue 10.0.2 contains hard-coded credentials, such as a password or cryptographic key,…
CVE-2022-35284 — High (CVSS 7.5): IBM Security Verify Information Queue 10.0.2 could disclose sensitive information due to a missing or insecure SameSite…
CVE-2021-20412 — High (CVSS 7.5): IBM Security Verify Information Queue 1.0.6 and 1.0.7 contains hard-coded credentials, such as a password or…

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