CVE-2011-1582

MEDIUMCVSS v2 · 4.34.3—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 4.3 — 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:M/Au:N/C:N/I:P/A:N. 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 6.0% 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
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS v2: 4.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Apache Tomcat 7.0.12 and 7.0.13 processes the first request to a servlet without following security constraints that have been configured through annotations, which allows remote attackers to bypass intended access restrictions via HTTP requests. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-1088, CVE-2011-1183, and CVE-2011-1419.

CVSS v2.0 (legacy)
4.3MEDIUMNVD never assigned a CVSS v3 rating to this CVE
EG Score
4.3(low)
EG Risk
26(Track)
EG Risk 26/100SSVC: 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
Severity43% × 45%
Exploitation6% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
6%
EPSS %ILE
93%
KEV
Not listed

Published

May 20, 2011

Last Modified

April 29, 2026

References (16)

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.tomcat:tomcat—7.0.14—

Data Freshness Timeline

(refreshed 10× in last 7d / 35× 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 106 total refreshes for this CVE.

  1. 2026-07-26 13:43 UTCEG score recompute▲ 4.30
  2. 2026-07-23 14:14 UTCEPSS rescore
  3. 2026-07-23 01:04 UTCEG score recompute
  4. 2026-07-23 00:40 UTCEG score recompute
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  6. 2026-07-22 21:47 UTCEG score recompute
  7. 2026-07-22 14:03 UTCEPSS rescore
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  58. 2026-05-29 13:41 UTCEPSS rescore
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  60. 2026-05-29 07:57 UTCEG score recompute
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Frequently asked(4)

What is CVE-2011-1582?
CVE-2011-1582 is a medium vulnerability published on May 20, 2011. Apache Tomcat 7.0.12 and 7.0.13 processes the first request to a servlet without following security constraints that have been configured through annotations, which allows remote attackers to bypass intended access restrictions via HTTP requests. NOTE: this vulnerability exists because of an…
When was CVE-2011-1582 disclosed?
CVE-2011-1582 was first published in the National Vulnerability Database on May 20, 2011, 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-2011-1582 actively exploited?
CVE-2011-1582 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.4% of all scored CVEs.
How do I remediate CVE-2011-1582?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-1582, 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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