Is CVE-2009-0783 being actively exploited?

CVE-2009-0783 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2009-0783?

CVE-2009-0783 has a CVSS 3.0 base score of 4.2 (MEDIUM).

CVE-2009-0783

MEDIUM · CVSS 4.2EPSS 0.8%EU EUVD

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18 permits web applications to replace an XML parser used for other web applications, which allows local users to read or modify the (1) web.xml, (2) context.xml, or (3) tld files of arbitrary web applications via a crafted application that is loaded earlier than the target application.

Key facts

CVSS score: 4.2 (v3.0)
Severity: MEDIUM
CVSS vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Weakness (CWE): CWE-200
EPSS score: 0.8% (57th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2022-4157)
Published: June 5, 2009
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2022-4157 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

apache / tomcat

References

http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html(Mailing List)
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html(Third Party Advisory)
http://marc.info/?l=bugtraq&m=127420533226623&w=2(Third Party Advisory)
http://marc.info/?l=bugtraq&m=129070310906557&w=2(Third Party Advisory)
http://marc.info/?l=bugtraq&m=136485229118404&w=2(Third Party Advisory)
http://secunia.com/advisories/35685(Vendor Advisory)
http://secunia.com/advisories/35788(Vendor Advisory)
http://secunia.com/advisories/37460(Vendor Advisory)
http://secunia.com/advisories/42368(Vendor Advisory)
http://sunsolve.sun.com/search/document.do?assetkey=1-26-263529-1(Third Party Advisory)
http://support.apple.com/kb/HT4077(Third Party Advisory)
http://svn.apache.org/viewvc?rev=652592&view=rev(Patch)
http://svn.apache.org/viewvc?rev=681156&view=rev(Patch)
http://svn.apache.org/viewvc?rev=739522&view=rev(Patch)
http://svn.apache.org/viewvc?rev=781542&view=rev(Patch)
http://svn.apache.org/viewvc?rev=781708&view=rev(Patch)
http://tomcat.apache.org/security-4.html(Patch, Vendor Advisory)
http://tomcat.apache.org/security-5.html(Patch, Vendor Advisory)
http://tomcat.apache.org/security-6.html(Patch, Vendor Advisory)
http://www.debian.org/security/2011/dsa-2207(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2009:136(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2009:138(Third Party Advisory)
http://www.mandriva.com/security/advisories?name=MDVSA-2010:176(Third Party Advisory)
http://www.securityfocus.com/archive/1/504090/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/archive/1/507985/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/bid/35416(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id?1022336(Third Party Advisory, VDB Entry)
http://www.vmware.com/security/advisories/VMSA-2009-0016.html(Third Party Advisory)
http://www.vupen.com/english/advisories/2009/1856(Vendor Advisory)
http://www.vupen.com/english/advisories/2009/3316(Vendor Advisory)
http://www.vupen.com/english/advisories/2010/3056(Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/51195(VDB Entry)
https://issues.apache.org/bugzilla/show_bug.cgi?id=29936(Issue Tracking, Patch)
https://issues.apache.org/bugzilla/show_bug.cgi?id=45933(Issue Tracking)
https://lists.apache.org/thread.html/06cfb634bc7bf37af7d8f760f118018746ad8efbd519c4b789ac9c2e%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/8dcaf7c3894d66cb717646ea1504ea6e300021c85bb4e677dc16b1aa%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r3aacc40356defc3f248aa504b1e48e819dd0471a0a83349080c6bcbf%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r584a714f141eff7b1c358d4679288177bd4ca4558e9999d15867d4b5%40%3Cdev.tomcat.apache.org%3E

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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