CVE-2021-20501

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.

8.2

CVSS

Severity: High

CVSS 3.1 •

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.45%

Vendor Advisory ibmcloud.com Vendor Advisory ibm.com

Affected: IBM i

References

Link	Tags
https://www.ibm.com/support/pages/node/6445505	vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/198056	vdb entry vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-20501?: CVE-2021-20501 has been scored as a high severity vulnerability.
How to fix CVE-2021-20501?: To fix CVE-2021-20501, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-20501 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-20501 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-20501?: CVE-2021-20501 affects IBM i.

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