CVE / KEV Lookup
Enter a CVE id to see severity (CVSS), exploit probability (EPSS), whether it's actively exploited (CISA KEV) and remediation pointers in one place. This site's own feed DB first, with a live NVD/FIRST fallback.
Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. From log4j 2.15.0, this behavior has been disabled by default. From version 2.16.0 (along with 2.12.2, 2.12.3, and 2.3.1), this functionality has been completely removed. Note that this vulnerability is specific to log4j-core and does not affect log4net, log4cxx, or other Apache Logging Services projects.
- http://packetstormsecurity.com/files/165311/log4j-scan-Extensive-Scanner.htmlBroken Link
- https://www.nu11secur1ty.com/2021/12/cve-2021-44228.htmlExploit
- http://www.openwall.com/lists/oss-security/2021/12/13/2Mailing List
- http://packetstormsecurity.com/files/165225/Apache-Log4j2-2.14.1-Remote-Code-Execution.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2022/Jul/11Mailing List
- https://cert-portal.siemens.com/productcert/pdf/ssa-397453.pdfThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU57UJDCFIASIO35GC55JMKSRXJMCDFM/Release Notes
- http://www.openwall.com/lists/oss-security/2021/12/14/4Mailing List
- https://cert-portal.siemens.com/productcert/pdf/ssa-714170.pdfThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/12/10/2Mailing List
- http://seclists.org/fulldisclosure/2022/Dec/2Exploit
- https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-44228Exploit
How to use
- 1
Enter the CVE id you care about (e.g. CVE-2021-44228).
- 2
CVSS, EPSS, KEV (actively exploited?) and remediation pointers are shown.
- 3
Dig deeper via “this site's analysis” or the “NVD official” page.
Why it matters
FAQ
QWhat is KEV?
CISA's catalog of vulnerabilities with confirmed real-world exploitation. KEV-listed = attacks are actually happening — top priority to fix.
QEPSS vs CVSS?
CVSS is severity; EPSS is the probability of exploitation in the next 30 days. A severe bug can have low exploit probability — seeing both gives realistic prioritization.
QCan I look up any CVE?
KEV-listed CVEs in this site's DB show instantly. Others resolve via a live NVD fetch if they exist (KEV will then read 'not listed').