8.2

CVE-2021-20501: ibm i

CVSS: 8.2v3.1HighModified
Published 21-04-2021Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2021-20501 is a high (CVSS 8.2) vulnerability in ibm i. EPSS estimates a 1.34% chance of exploitation in the next 30 days, higher than 70.8% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (NVD)
EPSS score
1.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 21-04-2021
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

1.34%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.34% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ibm1 product
  • i7.1 | 7.2 | 7.3 | 7.4

1 vendor · 1 product

References

2 links