What is CVE-2020-4966?

CVE-2020-4966 is a medium-severity vulnerability in IBM Security Identity Governance And Intelligence, classified under Improper Link Resolution Before File Access. CVSS score: 4.3/10. Published 2021-01-21.

How severe is CVE-2020-4966?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in IBM Security Identity Governance And Intelligence

CVE-2020-4966

IBM Security Identity Governance and Intelligence 5.2.6 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 192423.

Published 2021-01-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.014 (72.0th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

IBM Security Identity Governance And Intelligence — versions 5.2.6
IBM Security Identity Governance And Intelligence — versions 5.2.6

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

www.ibm.com/support/pages/node/6403233 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/192423 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4966?: CVE-2020-4966 is a medium-severity vulnerability in IBM Security Identity Governance And Intelligence, classified under Improper Link Resolution Before File Access. CVSS score: 4.3/10. Published 2021-01-21.
How severe is CVE-2020-4966?: Medium severity. CVSS v3 base score is 4.3 out of 10.