CVE-2020-9488 - CVE House
Back to Database
Status published Unknown CVE-2020-9488

Improper validation of certificate with host mismatch in Apache Log4j...

Vulnerability Description

Improper validation of certificate with host mismatch in Apache Log4j SMTP appender. This could allow an SMTPS connection to be intercepted by a man-in-the-middle attack which could leak any log messages sent through that appender. Fixed in Apache Log4j 2.12.3 and 2.13.1

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-9488

Credits & Attribution

No credits recorded in the NVD database.

References

More from Apache

View All →
CVE-2024-42362
GHSL-2023-255: HertzBeat Authenticated (user role) RCE via unsafe deserialization in /api/monitors/import
High 8.8
CVE-2024-42361
GHSL-2023-256: HertzBeat Authenticated (guest role) SQL injection in /api/monitor/{monitorId}/metric/{metricFull}
High 7.5
CVE-2021-32824
Regular expression Denial of Service in MooTools
Critical 9.8
CVE-2020-9482
If NiFi Registry 0.1.0 to 0.5.0 uses an authentication mechanism...
Medium 6.5
CVE-2020-9481
Apache ATS 6.0.0 to 6.2.3, 7.0.0 to 7.1.9, and 8.0.0...
High 7.5

Affected Vendor

Affected Software

Apache Log4j
Vulnerable Versions:
log4j-core 2.13.0, log4j-core

Timeline

Official Publish: April 27th, 2020
Last Modified: May 29th, 2026
Added to House: July 21st, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.