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Apache exploited vulnerabilities: 41 in CISA KEV, 3 in the last 12 months

Gociux · updated with each KEV addition · latest 8 Oct 2026

CISA lists 41 Apache vulnerabilities as exploited in the wild, 3 of them added in the last 12 months (flat from 3 in the 12 months before). 8 (20%) are known to be used in ransomware campaigns. For entries added in the last two years, the median time from CVE publication to the KEV listing was 135 days. Most affected: Struts (6), Tomcat (6), HTTP Server (4).

41in CISA KEV
3last 12 months
20%ransomware-linked
135dpublication → KEV (median)

Exploited CVEs added per year

12135533
202120222023202420252026

Most affected products

ProductKEV entries
Struts6
Tomcat6
HTTP Server4
ActiveMQ3
OFBiz3
Log4j22
Struts 12
Solr2
HugeGraph-Server1
Flink1
Superset1
RocketMQ1

Every exploited Apache CVE

CVEVulnerabilityAdded
CVE-2016-3081Apache Struts Command Injection VulnerabilityStruts8 Oct 2026
CVE-2026-34486Apache Tomcat Missing Encryption of Sensitive Data VulnerabilityTomcat4 Aug 2026
CVE-2026-34197Apache ActiveMQ Improper Input Validation VulnerabilityActiveMQ16 Apr 2026
CVE-2024-38475Apache HTTP Server Improper Escaping of Output VulnerabilityHTTP Server1 May 2025
CVE-2025-24813Apache Tomcat Path Equivalence VulnerabilityTomcat1 Apr 2025
CVE-2024-45195Apache OFBiz Forced Browsing VulnerabilityOFBiz4 Feb 2025
CVE-2024-27348Apache HugeGraph-Server Improper Access Control VulnerabilityHugeGraph-Server18 Sep 2024
CVE-2024-38856Apache OFBiz Incorrect Authorization VulnerabilityOFBiz27 Aug 2024
CVE-2024-32113Apache OFBiz Path Traversal VulnerabilityOFBiz7 Aug 2024
CVE-2020-17519Apache Flink Improper Access Control VulnerabilityFlink23 May 2024
CVE-2023-27524Apache Superset Insecure Default Initialization of Resource VulnerabilitySuperset8 Jan 2024
CVE-2023-46604Apache ActiveMQ Deserialization of Untrusted Data VulnerabilityRANSOMWAREActiveMQ2 Nov 2023
CVE-2023-33246Apache RocketMQ Command Execution VulnerabilityRocketMQ6 Sep 2023
CVE-2016-8735Apache Tomcat Remote Code Execution VulnerabilityTomcat12 May 2023
CVE-2021-45046Apache Log4j2 Deserialization of Untrusted Data VulnerabilityRANSOMWARELog4j21 May 2023
CVE-2022-33891Apache Spark Command Injection VulnerabilitySpark7 Mar 2023
CVE-2022-24706Apache CouchDB Insecure Default Initialization of Resource VulnerabilityCouchDB25 Aug 2022
CVE-2022-24112Apache APISIX Authentication Bypass VulnerabilityAPISIX25 Aug 2022
CVE-2020-1956Apache Kylin OS Command Injection VulnerabilityKylin25 Mar 2022
CVE-2017-12617Apache Tomcat Remote Code Execution VulnerabilityTomcat25 Mar 2022
CVE-2017-12615Apache Tomcat on Windows Remote Code Execution VulnerabilityRANSOMWARETomcat25 Mar 2022
CVE-2013-2251Apache Struts Improper Input Validation VulnerabilityStruts25 Mar 2022
CVE-2020-1938Apache Tomcat Improper Privilege Management VulnerabilityTomcat3 Mar 2022
CVE-2017-9791Apache Struts 1 Improper Input Validation VulnerabilityStruts 110 Feb 2022
CVE-2016-3088Apache ActiveMQ Improper Input Validation VulnerabilityActiveMQ10 Feb 2022
CVE-2012-0391Apache Struts 2 Improper Input Validation VulnerabilityStruts 221 Jan 2022
CVE-2006-1547Apache Struts 1 ActionForm Denial-of-Service VulnerabilityStruts 121 Jan 2022
CVE-2020-13927Apache Airflow's Experimental API Authentication BypassAirflow's Experimental API18 Jan 2022
CVE-2020-11978Apache Airflow Command InjectionAirflow18 Jan 2022
CVE-2021-44228Apache Log4j2 Remote Code Execution VulnerabilityRANSOMWARELog4j210 Dec 2021
CVE-2019-0193Apache Solr DataImportHandler Code Injection VulnerabilitySolr10 Dec 2021
CVE-2021-40438Apache HTTP Server-Side Request Forgery (SSRF)RANSOMWAREApache1 Dec 2021
CVE-2021-42013Apache HTTP Server Path Traversal VulnerabilityRANSOMWAREHTTP Server3 Nov 2021
CVE-2021-41773Apache HTTP Server Path Traversal VulnerabilityRANSOMWAREHTTP Server3 Nov 2021
CVE-2020-17530Apache Struts Remote Code Execution VulnerabilityStruts3 Nov 2021
CVE-2019-17558Apache Solr VelocityResponseWriter Plug-In Remote Code Execution VulnerabilitySolr3 Nov 2021
CVE-2019-0211Apache HTTP Server Privilege Escalation VulnerabilityHTTP Server3 Nov 2021
CVE-2018-11776Apache Struts Remote Code Execution VulnerabilityStruts3 Nov 2021
CVE-2017-9805Apache Struts Deserialization of Untrusted Data VulnerabilityStruts3 Nov 2021
CVE-2017-5638Apache Struts Remote Code Execution VulnerabilityRANSOMWAREStruts3 Nov 2021
CVE-2016-4437Apache Shiro Code Execution VulnerabilityShiro3 Nov 2021

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How to read this: CISA KEV lists vulnerabilities with reliable evidence of exploitation; a vendor with many entries is often one with a large, internet-facing install base, not necessarily worse engineering. "Publication → KEV" is the median number of days between the CVE's publication and its addition to KEV, for entries added in the last 24 months (6 entries); it is an upper bound on how long defenders had, since exploitation usually starts before the listing. Under NIS2 article 21(2)(d), supplier security is part of your risk management; this page is a starting point for that review. Compare vendors on the scorecard index.

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