What is CVE-2021-20501?

CVE-2021-20501 is a high-severity vulnerability in IBM I. CVSS score: 8.2/10. Published 2021-04-21.

How severe is CVE-2021-20501?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in IBM I

CVE-2021-20501

IBM i 7.1, 7.2, 7.3, and 7.4 SMTP allows a network attacker to send emails to non-existent local-domain recipients to the SMTP server, caused by using a non-default configuration. An attacker could exploit this vulnerability to consume unnecessary network bandwidth and disk space, and allow remote attackers to send spam email. IBM X-Force ID: 198056.

EPSS: 0.013 (68.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Ibm I — versions 7.1, 7.2, 7.3

References

psirt@us.ibm.com (x_refsource_CONFIRM, Vendor Advisory)
psirt@us.ibm.com (VDB Entry, vdb-entry, Vendor Advisory, x_refsource_XF)

Frequently asked questions

What is CVE-2021-20501?: CVE-2021-20501 is a high-severity vulnerability in IBM I. CVSS score: 8.2/10. Published 2021-04-21.
How severe is CVE-2021-20501?: High severity. CVSS v3 base score is 8.2 out of 10.