How severe is CVE-2021-20431?

CVE-2021-20431 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-20431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20431?

CVE-2021-20431 primarily affects Ibm I2 Analysts Notebook. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-20431?

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

When was CVE-2021-20431 published?

CVE-2021-20431 was published on 2021-07-26 and last updated on 2026-06-17.

CVE-2021-20431

CVE-2021-20431 is a medium-severity vulnerability in Ibm I2 Analysts Notebook with a CVSS 3.x base score of 6.5. 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-613.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Ibm I2 Analysts Notebook
Published: 2021-07-26
Last modified: 2026-06-17

Description

IBM i2 Analyst's Notebook Premium 9.2.0, 9.2.1, and 9.2.2 does not invalidate session after logout which could allow an an attacker to obtain sensitive information from the system. IBM X-Force ID: 196342.

Frequently asked questions

What is CVE-2021-20431?: IBM i2 Analyst's Notebook Premium 9.2.0, 9.2.1, and 9.2.2 does not invalidate session after logout which could allow an an attacker to obtain sensitive information from the system. IBM X-Force ID: 196342.
How severe is CVE-2021-20431?: CVE-2021-20431 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-20431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20431?: CVE-2021-20431 primarily affects Ibm I2 Analysts Notebook. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-20431?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20431 published?: CVE-2021-20431 was published on 2021-07-26 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:ibm:i2_analysts_notebook:9.2.0:*:*:*:premium:*:*:*
cpe:2.3:a:ibm:i2_analysts_notebook:9.2.1:*:*:*:premium:*:*:*
cpe:2.3:a:ibm:i2_analysts_notebook:9.2.2:*:*:*:premium:*:*:*

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Other CWE-613 (Insufficient Session Expiration) vulnerabilities

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