CVE-2012-4534

LOWCVSS v2 · 2.62.6—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 2.6 — v2 rates that LOW (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:H/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 7.5% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.

Triggered by: NVD CVSS v2.0 (legacy fallback)
Sources: epss, nvd_v2
Trending — 6 sources updated this week
2.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 7.5%CVSS v2: 2.6Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

org/apache/tomcat/util/net/NioEndpoint.java in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.28, when the NIO connector is used in conjunction with sendfile and HTTPS, allows remote attackers to cause a denial of service (infinite loop) by terminating the connection during the reading of a response.

CVSS v2.0 (legacy)
2.6LOWNVD never assigned a CVSS v3 rating to this CVE
EG Score
2.6LOWlow confidence
EG Risk
30
EG Risk 30/100CISA 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
Severity26% × 45%
Exploitation7% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; 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
7.5%
EPSS %ILE
94th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; 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 (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). 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

December 19, 2012

Last Modified

October 9, 2026

References (38)

Vendor Advisories for CVE-2012-4534(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulibtomcat7-java (7.0.30-0ubuntu1.1) @ quantal2026-10-09ubuntu
redhattomcat6-0:6.0.24-52.el6_42013-03-11redhat
redhattomcat6-0:6.0.35-29_patch_06.ep6.el62013-02-19redhat
redhatpatch2013-02-19redhat

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.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 13× in last 7d / 21× 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 145 total refreshes for this CVE.

  1. 2026-10-09 20:34 UTCVendor advisory
  2. 2026-10-09 20:34 UTCGHSA enrichment
  3. 2026-10-09 20:33 UTCNVD update
  4. 2026-10-09 20:00 UTCEPSS rescore
  5. 2026-10-09 19:19 UTCEG score recompute
  6. 2026-10-09 19:19 UTCVendor advisory
  7. 2026-10-09 19:19 UTCGHSA enrichment
  8. 2026-10-09 19:18 UTCMITRE cvelistV5
  9. 2026-10-08 16:34 UTCEPSS rescore
  10. 2026-10-07 23:39 UTCEPSS rescore
  11. 2026-10-06 15:10 UTCEPSS rescore
  12. 2026-10-05 17:37 UTCEPSS rescore
  13. 2026-10-03 14:20 UTCEPSS rescore
  14. 2026-09-29 08:31 UTCEG score recompute
  15. 2026-09-28 13:44 UTCEPSS rescore
  16. 2026-09-27 13:39 UTCEPSS rescore
  17. 2026-09-26 15:52 UTCEPSS rescore
  18. 2026-09-24 13:57 UTCEPSS rescore
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  20. 2026-09-15 03:04 UTCEPSS rescore
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  24. 2026-09-04 13:55 UTCEPSS rescore
  25. 2026-08-28 21:34 UTCEPSS rescore
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  1. 2026-08-27 14:20 UTCEPSS rescore
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  5. 2026-08-19 16:59 UTCEPSS rescore
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  15. 2026-07-30 01:26 UTCEPSS rescore
  16. 2026-07-28 15:31 UTCEPSS rescore
  17. 2026-07-26 13:46 UTCEG score recompute▲ 2.60
  18. 2026-07-25 14:12 UTCEPSS rescore
  19. 2026-07-23 14:14 UTCEPSS rescore
  20. 2026-07-23 01:08 UTCEG score recompute
  21. 2026-07-23 00:11 UTCEG score recompute
  22. 2026-07-22 21:50 UTCEG score recompute
  23. 2026-07-22 14:04 UTCEPSS rescore
  24. 2026-07-22 14:04 UTCEPSS rescore
  25. 2026-07-21 15:21 UTCEPSS rescore
  26. 2026-07-20 17:03 UTCEPSS rescore
  27. 2026-07-20 17:03 UTCEPSS rescore
  28. 2026-07-19 14:27 UTCEPSS rescore
  29. 2026-07-19 02:25 UTCEPSS rescore
  30. 2026-07-18 10:00 UTCEPSS rescore
  31. 2026-07-16 16:58 UTCEPSS rescore
  32. 2026-07-15 16:54 UTCEPSS rescore
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  34. 2026-07-15 01:56 UTCEPSS rescore
  35. 2026-07-13 22:25 UTCEPSS rescore
  36. 2026-07-13 06:08 UTCEPSS rescore
  37. 2026-07-11 08:22 UTCEPSS rescore
  38. 2026-07-09 19:05 UTCEPSS rescore
  39. 2026-07-08 15:10 UTCEPSS rescore
  40. 2026-07-08 15:10 UTCEPSS rescore
  41. 2026-07-06 16:23 UTCEPSS rescore
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  46. 2026-07-02 14:01 UTCEPSS rescore
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  48. 2026-06-30 23:19 UTCEPSS rescore
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  50. 2026-06-29 14:02 UTCEPSS rescore
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  52. 2026-06-28 04:53 UTCEPSS rescore
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  54. 2026-06-27 03:05 UTCEPSS rescore
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  56. 2026-06-25 13:46 UTCEPSS rescore
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  58. 2026-06-24 14:02 UTCEPSS rescore
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  63. 2026-06-21 01:56 UTCEPSS rescore
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  74. 2026-06-14 23:14 UTCEPSS rescore
  75. 2026-06-14 23:14 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2012-4534?
CVE-2012-4534 is a low vulnerability published on December 19, 2012. org/apache/tomcat/util/net/NioEndpoint.java in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.28, when the NIO connector is used in conjunction with sendfile and HTTPS, allows remote attackers to cause a denial of service (infinite loop) by terminating the connection during the reading of a…
When was CVE-2012-4534 disclosed?
CVE-2012-4534 was first published on December 19, 2012, with the most recent update on October 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2012-4534 actively exploited?
CVE-2012-4534 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.5% probability of exploitation in the next 30 days (94th percentile of EPSS-scored CVEs).
How do I remediate CVE-2012-4534?
A fix for CVE-2012-4534 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2012-4534 are linked in the Vendor Advisories panel on this page.

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