What is CVE-2021-29681?

CVE-2021-29681 is a medium-severity vulnerability in IBM Aix. CVSS score: 5.3/10. Published 2021-05-21.

How severe is CVE-2021-29681?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in IBM Aix

CVE-2021-29681

IBM InfoSphere Information Server 11.7 could allow an attacker to obtain sensitive information by injecting parameters into an HTML query. This information could be used in further attacks against the system. IBM X-Force ID: 199918.

Published 2021-05-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.3th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

IBM Aix
IBM Infosphere Information Server — versions 11.7
IBM Infosphere Information Server — versions 11.7
Linux Kernel
Microsoft Windows

References

www.ibm.com/support/pages/node/6454591 (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/199917 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2021-29681?: CVE-2021-29681 is a medium-severity vulnerability in IBM Aix. CVSS score: 5.3/10. Published 2021-05-21.
How severe is CVE-2021-29681?: Medium severity. CVSS v3 base score is 5.3 out of 10.