Vulnerability · Published Apr 21, 2021 · Assigned by ibm
CVE-2021-20501
Medium 5.9
In plain English
A medium-severity security flaw in i from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities).
Severity (CVSS 3.0)5.9Medium
Exploit odds (30 days)1.3%top 28.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
References
- https://www.ibm.com/support/pages/node/6445505 x_refsource_CONFIRM
- ibm-i-cve202120501-dos (198056) vdb-entry, x_refsource_XF