CVE-2012-0022

MEDIUMCVSS v2 · 5.05.0—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.0 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:N/I:N/A:P. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 10.9% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Sources: epss, nvd_v2
Elevated
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 11%CVSS v2: 5.0Exploit: Elevated riskExposed: 0

A fix is available — apply it.

Apache Tomcat 5.5.x before 5.5.35, 6.x before 6.0.34, and 7.x before 7.0.23 uses an inefficient approach for handling parameters, which allows remote attackers to cause a denial of service (CPU consumption) via a request that contains many parameters and parameter values, a different vulnerability than CVE-2011-4858.

CVSS v2.0 (legacy)
5.0MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
5.0(low)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

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
Severity50% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
11%
EPSS %ILE
95%
KEV
Not listed

Published

January 19, 2012

Last Modified

April 29, 2026

References (64)

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibtomcat6-java (6.0.28-10ubuntu2.3) @ natty2026-05-29ubuntu
redhatpatch2012-10-03redhat
redhatpatch2012-05-21redhat
redhatpatch2012-05-21redhat
redhattomcat5-0:5.5.33-28_patch_07.ep5.el62012-05-21redhat
redhattomcat6-0:6.0.32-24_patch_07.ep5.el62012-05-21redhat
redhattomcat5-0:5.5.23-0jpp.31.el5_82012-04-11redhat
redhattomcat6-0:6.0.24-36.el6_22012-04-11redhat
redhatpatch2012-03-01redhat
redhatpatch2012-02-22redhat
redhatpatch2012-01-31redhat
redhatpatch2012-01-31redhat
redhatjbossweb-0:2.1.12-3_patch_03.2.ep5.el62012-01-31redhat
redhatpatch2012-01-31redhat

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

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.tomcat:tomcat—7.0.23—

All Vendor Advisories

(15)

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 9× in last 7d / 34× 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.

  1. 2026-07-26 13:44 UTCEG score recompute▲ 5.00
  2. 2026-07-25 14:12 UTCEPSS rescore
  3. 2026-07-23 14:14 UTCEPSS rescore
  4. 2026-07-23 01:06 UTCEG score recompute
  5. 2026-07-23 00:10 UTCEG score recompute
  6. 2026-07-22 21:48 UTCEG score recompute
  7. 2026-07-22 14:04 UTCEPSS rescore
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  9. 2026-07-21 15:21 UTCEPSS rescore
  10. 2026-07-20 17:03 UTCEPSS rescore
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  12. 2026-07-19 14:27 UTCEPSS rescore
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  15. 2026-07-16 16:58 UTCEPSS rescore
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  1. 2026-07-04 06:27 UTCEPSS rescore
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  3. 2026-07-01 15:02 UTCEPSS rescore
  4. 2026-06-30 23:19 UTCEPSS rescore
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  6. 2026-06-29 14:02 UTCEPSS rescore
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  8. 2026-06-28 04:53 UTCEPSS rescore
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  10. 2026-06-27 03:05 UTCEPSS rescore
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  12. 2026-06-25 13:46 UTCEPSS rescore
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  16. 2026-06-23 21:30 UTCEPSS rescore
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  19. 2026-06-21 01:56 UTCEPSS rescore
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  21. 2026-06-18 17:49 UTCEPSS rescore
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  23. 2026-06-17 17:49 UTCEPSS rescore
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  25. 2026-06-16 17:49 UTCEPSS rescore
  26. 2026-06-16 17:49 UTCEPSS rescore
  27. 2026-06-15 17:44 UTCEPSS rescore
  28. 2026-06-14 23:14 UTCEPSS rescore
  29. 2026-06-14 23:14 UTCEPSS rescore
  30. 2026-06-13 22:57 UTCEPSS rescore
  31. 2026-06-12 23:08 UTCEPSS rescore
  32. 2026-06-11 13:56 UTCEPSS rescore
  33. 2026-06-10 22:14 UTCEPSS rescore
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  35. 2026-06-08 14:14 UTCEPSS rescore
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  37. 2026-06-07 15:22 UTCEPSS rescore
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  39. 2026-06-06 13:45 UTCEPSS rescore
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  41. 2026-06-05 22:44 UTCEPSS rescore
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  43. 2026-06-05 06:08 UTCEPSS rescore
  44. 2026-06-05 06:08 UTCEPSS rescore
  45. 2026-06-04 13:09 UTCEPSS rescore
  46. 2026-06-02 20:10 UTCEPSS rescore
  47. 2026-06-02 20:10 UTCEPSS rescore
  48. 2026-06-01 13:49 UTCEPSS rescore
  49. 2026-05-31 22:28 UTCEPSS rescore
  50. 2026-05-31 22:28 UTCEPSS rescore
  51. 2026-05-31 00:14 UTCEPSS rescore
  52. 2026-05-31 00:14 UTCEPSS rescore
  53. 2026-05-29 13:41 UTCEPSS rescore
  54. 2026-05-29 05:43 UTCEG score recompute
  55. 2026-05-29 05:43 UTCVendor advisory
  56. 2026-05-28 13:42 UTCEPSS rescore
  57. 2026-05-28 13:42 UTCEPSS rescore
  58. 2026-05-27 13:38 UTCEPSS rescore
  59. 2026-05-27 13:38 UTCEPSS rescore
  60. 2026-05-26 13:41 UTCEPSS rescore
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  62. 2026-05-24 16:43 UTCEPSS rescore
  63. 2026-05-22 21:15 UTCEPSS rescore
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  66. 2026-05-20 22:37 UTCEPSS rescore
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  69. 2026-05-20 11:21 UTCEPSS rescore
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  71. 2026-05-20 11:21 UTCEPSS rescore
  72. 2026-05-18 21:29 UTCEPSS rescore
  73. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same vendor)

Frequently asked(4)

What is CVE-2012-0022?
CVE-2012-0022 is a medium vulnerability published on January 19, 2012. Apache Tomcat 5.5.x before 5.5.35, 6.x before 6.0.34, and 7.x before 7.0.23 uses an inefficient approach for handling parameters, which allows remote attackers to cause a denial of service (CPU consumption) via a request that contains many parameters and parameter values, a different vulnerability…
When was CVE-2012-0022 disclosed?
CVE-2012-0022 was first published in the National Vulnerability Database on January 19, 2012, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-0022 actively exploited?
CVE-2012-0022 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11% probability of exploitation in the next 30 days, which ranks it in the top 4.6% of all scored CVEs.
How do I remediate CVE-2012-0022?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2012-0022, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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