LO
Library
Log4j
On CISA KEVExploited in the wildRansomware-linked
20
CVEs
2
On KEV
10.0
Max CVSS
0
New 30D
Severity mix
Critical 6High 8Medium 5Low 1
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| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2021-44832 | 6.6 | Dec 28 | Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to a remote code execution (RCE) attack when a configuration uses… Affected: 2.0.1 before 2.3.2; 2.4 before 2.12.4; 2.13.0 before 2.17.1; 2.0; 2.0; 2.0; +3 more |
| CVE-2026-49844 | 5.9 | Jul 10 | Apache Log4j API: Improper serialization of non-finite floating-point values in MapMessage.asJson() Affected: 2.13.1 before 2.25.5; 2.26.0; 3.0.0; 3.0.0; 3.0.0; 3.0.0; +1 more |
| CVE-2026-34477 | 5.9 | Apr 10 | Apache Log4j Core: verifyHostName attribute silently ignored in TLS configuration, allowing hostname verification bypass Affected: 2.12.0 before 2.25.4; 3.0.0-alpha1 through 3.0.0-beta3 |
| CVE-2021-45105 | 5.9 | Dec 18 | Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups Affected: 2.0 before 2.3.1; 2.4 before 2.12.3; 2.13.0 through 2.16.0 |
| CVE-2025-68161 | 4.8 | Dec 18 | The Socket Appender in Apache Log4j Core versions 2.0-beta9 through 2.25.2 does not perform TLS hostname verification of the peer certificate, even when the verifyHostName… Affected: 2.0.1 before 2.25.3; 2.0; 2.0; 2.0; 2.0; 2.0 |
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