CVEFinder.io

CVE-2021-45105

🔶 medium
Summary

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. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.

CVSS Score
5.9
Medium
EPSS Score
70.4
Exploit Probability
Published Date
2021-12-18
First Seen: 2026-01-05
Last Modified 2024-11-21
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE IDs (Weakness Types)

🔗 References 26

http://www.openwall.com/lists/oss-security/2021/12/19/1
Mailing List Mitigation Third Party Advisory
https://www.kb.cert.org/vuls/id/930724
Third Party Advisory US Government Resource
http://www.openwall.com/lists/oss-security/2021/12/19/1
Mailing List Mitigation Third Party Advisory
https://www.kb.cert.org/vuls/id/930724
Third Party Advisory US Government Resource

📦 Affected Products 207

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2025-68670 ⛔ critical 9.1 0.3 xrdp is an open source RDP server. xrdp before v0.10.5 contains an unauthenticated stack-based buffer overflow vulnerabi... 2026-01-27
CVE-2026-24061 ⛔ critical 9.8 29.6 telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment ... 2026-01-21
CVE-2026-21934 🔶 medium 5.4 0.0 Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Push Notifications). Su... 2026-01-20
CVE-2026-21938 🔶 medium 6.1 0.0 Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Portal). Supported vers... 2026-01-20
CVE-2026-21951 🔶 medium 6.1 0.0 Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Integration Broker). Su... 2026-01-20
CVE-2026-21976 ⚠️ high 7.1 0.0 Vulnerability in the Oracle Business Intelligence Enterprise Edition product of Oracle Analytics (component: Oracle Anal... 2026-01-20
These CVEs affect the same products