What is CVE-2020-4261?

CVE-2020-4261 is a high-severity vulnerability in IBM I2 Analysts Notebook, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-05-14.

How severe is CVE-2020-4261?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in IBM I2 Analysts Notebook

CVE-2020-4261

IBM i2 Intelligent Analyis Platform 9.2.1 could allow a local attacker to execute arbitrary code on the system, caused by a memory corruption. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 175644.

Vulnerability class: Buffer Overflow

Published 2020-05-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

IBM I2 Analysts Notebook — versions 9.2.1
IBM I2 Analysts Notebook — versions 9.2.1
Microsoft Windows

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.ibm.com/support/pages/node/6209081 (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/175644 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4261?: CVE-2020-4261 is a high-severity vulnerability in IBM I2 Analysts Notebook, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-05-14.
How severe is CVE-2020-4261?: High severity. CVSS v3 base score is 7.8 out of 10.