CVE-2009-0783

MEDIUMNVD 4.24.2—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.2 under NVD CVSS v3. EPSS exploit probability: 0.8% (55th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.2EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 4.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
4.2
EG Score
4.2MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity42% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
55th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

June 5, 2009

Last Modified

April 23, 2026

Advisory Details (4)

Auto-updated Sep 29, 2026
Patch available.
generic

Secunia Research & Vulnerability Insights | Flexera

http://secunia.com/advisories/42368
generic

'[security bulletin] HPSBUX02860 SSRT101146 rev.1 - HP-UX Apache Running Tomcat Servlet Engine, Remot' - MARC

http://marc.info/?l=bugtraq&m=136485229118404&w=2
generic

'[security bulletin] HPSBUX02579 SSRT100203 rev.1 - HP-UX Apache Running Tomcat Servlet Engine, Remot' - MARC

http://marc.info/?l=bugtraq&m=129070310906557&w=2
generic

'[security bulletin] HPSBMA02535 SSRT100029 rev.1 - HP Performance Manager, Remote Unauthorized Acces' - MARC

http://marc.info/?l=bugtraq&m=127420533226623&w=2

Patch Availability(10)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntutomcat6-examples (6.0.18-0ubuntu6.1) @ jaunty2026-05-30ubuntu
redhattomcat5-0:5.5.23-0jpp_18rh2009-11-30redhat
redhattomcat5-0:5.0.30-0jpp_16rh2009-11-30redhat
redhattomcat5-0:5.5.23-0jpp_4rh.162009-11-09redhat
redhattomcat6-0:6.0.18-12.0.ep5.el52009-10-14redhat
redhattomcat5-0:5.5.23-0jpp.9.6.ep5.el52009-09-21redhat
redhattomcat5-0:5.5.23-0jpp.7.el5_3.22009-07-21redhat
redhatxerces-j2-0:2.7.1-9jpp.ep1.2.el42009-07-06redhat
redhatrh-eap-docs-0:4.2.0-5.GA_CP07.ep1.1.1.el52009-07-06redhat
redhatrh-eap-docs-0:4.3.0-5.GA_CP05.ep1.2.1.el52009-07-06redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:5.0(1)
PackageVulnerable rangeFix by version rangeDependents
tomcat5.55.5.26-5
  • every version up to 5.5.26-5lenny2: fixed in 5.5.26-5lenny2
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.apache.tomcat:tomcat—
  • 4.1.0 through 4.1.39: no fix on record
  • 5.5.0 through 5.5.27: no fix on record
  • 6.0.0 up to 6.0.20: fixed in 6.0.20
—

All Vendor Advisories

(12)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 128 total refreshes for this CVE.

  1. 2026-10-09 20:00 UTCEPSS rescore
  2. 2026-10-08 16:33 UTCEPSS rescore
  3. 2026-10-07 23:37 UTCEPSS rescore
  4. 2026-10-06 15:09 UTCEPSS rescore
  5. 2026-10-05 17:37 UTCEPSS rescore
  6. 2026-10-04 23:15 UTCEPSS rescore
  7. 2026-09-30 14:58 UTCEPSS rescore
  8. 2026-09-29 07:57 UTCEG score recompute
  9. 2026-09-27 13:39 UTCEPSS rescore
  10. 2026-09-26 15:52 UTCEPSS rescore
  11. 2026-09-24 13:57 UTCEPSS rescore
  12. 2026-09-17 19:20 UTCEPSS rescore
  13. 2026-09-15 03:04 UTCEPSS rescore
  14. 2026-09-13 16:40 UTCEPSS rescore
  15. 2026-09-12 14:54 UTCEPSS rescore
  16. 2026-09-10 09:24 UTCEPSS rescore
  17. 2026-09-06 13:41 UTCEPSS rescore
  18. 2026-09-05 15:22 UTCEPSS rescore
  19. 2026-09-04 13:55 UTCEPSS rescore
  20. 2026-08-28 21:34 UTCEPSS rescore
  21. 2026-08-27 14:19 UTCEPSS rescore
  22. 2026-08-25 13:43 UTCEPSS rescore
  23. 2026-08-19 16:58 UTCEPSS rescore
  24. 2026-08-15 01:24 UTCEPSS rescore
  25. 2026-08-09 13:41 UTCEPSS rescore
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  1. 2026-08-08 16:31 UTCEPSS rescore
  2. 2026-08-06 13:41 UTCEPSS rescore
  3. 2026-08-03 10:28 UTCEPSS rescore
  4. 2026-07-30 16:22 UTCEPSS rescore
  5. 2026-07-30 01:26 UTCEPSS rescore
  6. 2026-07-25 14:12 UTCEPSS rescore
  7. 2026-07-24 14:12 UTCEPSS rescore
  8. 2026-07-23 14:14 UTCEPSS rescore
  9. 2026-07-23 00:58 UTCEG score recompute
  10. 2026-07-23 00:36 UTCEG score recompute
  11. 2026-07-23 00:03 UTCEG score recompute
  12. 2026-07-22 21:42 UTCEG score recompute
  13. 2026-07-22 14:03 UTCEPSS rescore
  14. 2026-07-21 15:20 UTCEPSS rescore
  15. 2026-07-20 17:03 UTCEPSS rescore
  16. 2026-07-20 17:03 UTCEPSS rescore
  17. 2026-07-18 09:59 UTCEPSS rescore
  18. 2026-07-16 16:58 UTCEPSS rescore
  19. 2026-07-15 16:54 UTCEPSS rescore
  20. 2026-07-15 16:54 UTCEPSS rescore
  21. 2026-07-15 01:55 UTCEPSS rescore
  22. 2026-07-13 22:25 UTCEPSS rescore
  23. 2026-07-13 06:07 UTCEPSS rescore
  24. 2026-07-11 08:22 UTCEPSS rescore
  25. 2026-07-11 08:22 UTCEPSS rescore
  26. 2026-07-09 19:04 UTCEPSS rescore
  27. 2026-07-08 15:10 UTCEPSS rescore
  28. 2026-07-06 16:23 UTCEPSS rescore
  29. 2026-07-06 02:19 UTCEPSS rescore
  30. 2026-07-06 02:19 UTCEPSS rescore
  31. 2026-07-05 02:26 UTCEPSS rescore
  32. 2026-07-05 02:26 UTCEPSS rescore
  33. 2026-07-04 06:27 UTCEPSS rescore
  34. 2026-07-01 15:02 UTCEPSS rescore
  35. 2026-06-30 23:19 UTCEPSS rescore
  36. 2026-06-29 14:02 UTCEPSS rescore
  37. 2026-06-29 14:02 UTCEPSS rescore
  38. 2026-06-28 14:03 UTCEPSS rescore
  39. 2026-06-28 04:52 UTCEPSS rescore
  40. 2026-06-28 04:52 UTCEPSS rescore
  41. 2026-06-27 03:05 UTCEPSS rescore
  42. 2026-06-25 13:46 UTCEPSS rescore
  43. 2026-06-25 13:46 UTCEPSS rescore
  44. 2026-06-24 14:02 UTCEPSS rescore
  45. 2026-06-24 14:02 UTCEPSS rescore
  46. 2026-06-23 21:29 UTCEPSS rescore
  47. 2026-06-23 21:29 UTCEPSS rescore
  48. 2026-06-22 14:22 UTCEPSS rescore
  49. 2026-06-22 14:22 UTCEPSS rescore
  50. 2026-06-21 14:53 UTCEPSS rescore
  51. 2026-06-21 01:56 UTCEPSS rescore
  52. 2026-06-21 01:56 UTCEPSS rescore
  53. 2026-06-19 19:22 UTCEPSS rescore
  54. 2026-06-19 19:22 UTCEPSS rescore
  55. 2026-06-18 17:49 UTCEPSS rescore
  56. 2026-06-18 17:49 UTCEPSS rescore
  57. 2026-06-17 17:49 UTCEPSS rescore
  58. 2026-06-17 17:49 UTCEPSS rescore
  59. 2026-06-16 17:49 UTCEPSS rescore
  60. 2026-06-16 17:49 UTCEPSS rescore
  61. 2026-06-15 17:44 UTCEPSS rescore
  62. 2026-06-14 23:14 UTCEPSS rescore
  63. 2026-06-14 23:14 UTCEPSS rescore
  64. 2026-06-13 22:57 UTCEPSS rescore
  65. 2026-06-12 23:08 UTCEPSS rescore
  66. 2026-06-12 23:08 UTCEPSS rescore
  67. 2026-06-10 22:14 UTCEPSS rescore
  68. 2026-06-10 13:17 UTCEPSS rescore
  69. 2026-06-08 14:13 UTCEPSS rescore
  70. 2026-06-07 15:22 UTCEPSS rescore
  71. 2026-06-07 15:22 UTCEPSS rescore
  72. 2026-06-06 13:44 UTCEPSS rescore
  73. 2026-06-06 13:44 UTCEPSS rescore
  74. 2026-06-06 13:44 UTCEPSS rescore
  75. 2026-06-05 22:44 UTCEPSS rescore

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2009-0783?
CVE-2009-0783 is a medium vulnerability published on June 5, 2009. 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…
When was CVE-2009-0783 disclosed?
CVE-2009-0783 was first published on June 5, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-0783 actively exploited?
CVE-2009-0783 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (55th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2009-0783?
CVE-2009-0783 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2009-0783?
A fix for CVE-2009-0783 is available: update to the fixed version the vendor names in its advisory.

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