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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.013 (70.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- IBM I — versions 7.1, 7.2, 7.3
References
- www.ibm.com/support/pages/node/6445505 (Vendor Advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/198056 (VDB Entry, vdb-entry, Vendor Advisory)
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.