Log4net
Vendor:
First CVE: Mar 9, 2006 · Active for 20 years
3
Total CVEs
More Total CVEs than 64% of tracked products
1.0
Avg CVEs / Year
Bottom 1%
6.7
Avg CVSS
Higher Avg CVSS than 34% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Log4net over time
Volume of CVEsAvg CVSS Base Score
First CVE
Mar 9, 2006
20 years ago
Most Recent CVE
Apr 10, 2026
105 days ago
CVE Severity & Scoring
Log4net3 CVEs
67%
33%
All CVEs352,231 CVEs
45%
40%
11%
MediumCritical
Attack Vector
Local0 (0.0%)
Network2 (66.7%)
Unknown1 (33.3%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low2 (66.7%)
High0 (0.0%)
Unknown1 (33.3%)
User Interaction
None2 (66.7%)
Unknown1 (33.3%)
Required0 (0.0%)
Privileges Required
Low0 (0.0%)
High0 (0.0%)
None2 (66.7%)
Unknown1 (33.3%)
Top CVEs
Signals from CVEs in this product scope (3 CVEs).
3 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2018-1285CRITICAL Apache log4net versions before 2.0.10 do not disable XML external entities when parsing log4net configuration files. This allows for XXE-based attacks in applications that accept a | May 11, 2020 | 9.8 | 44 | NO | NO |
CVE-2026-40021MEDIUM Apache Log4net's XmlLayout https://logging.apache.org/log4net/manual/configuration/layouts.html#layout-list and XmlLayoutSchemaLog4J https://logging.apache.org/log4net/manual/co | Apr 10, 2026 | 5.3 | 21 | NO | NO |
CVE-2006-0743MEDIUM Format string vulnerability in LocalSyslogAppender in Apache log4net 1.2.9 might allow remote attackers to cause a denial of service (memory corruption and termination) via unknown | Mar 9, 2006 | 5.0 | 17 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (3 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (3 CVEs).
Media Mentions
Signals from CVEs in this product scope (3 CVEs).
Top CNAs Publishing CVEs For Log4net
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 1.2.9_beta | 1 | 5.0 | 6.2% | 0 | 0 |