CVE-2011-3556

HIGHCVSS v2 · 7.57.5—
EchelonGraph scoreLOW confidence

This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 7.5 — v2 rates that HIGH (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:P/I:P/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 76.4% 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
Weaponized
7.5EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 76%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 76%CVSS v2: 7.5Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE JDK and JRE 7, 6 Update 27 and earlier, 5.0 Update 31 and earlier, 1.4.2_33 and earlier, and JRockit R28.1.4 and earlier allows remote attackers to affect confidentiality, integrity, and availability, related to RMI, a different vulnerability than CVE-2011-3557.

CVSS v2.0 (legacy)
7.5HIGHNVD never assigned a CVSS v3 rating to this CVE
EG Score
7.5HIGHlow confidence
EG Risk
69
EG Risk 69/100CISA 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
Severity75% × 45%
Exploitation76% × 40%
Automatability30% × 15%
CISA SSVC: Track at low, Track or Track* at medium and Track* or Attend at high mission impact.
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
76%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low, Track or Track* at medium and Track* or Attend at high mission impact.

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

Exploitation public PoC (EG-KEV: weaponized) · Automatable unknown (not published for this CVE) · Technical impact unknown (not published for this CVE). 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

October 19, 2011

Last Modified

April 29, 2026

References (48)

Vendor Advisories for CVE-2011-3556(7)

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

Patch Availability(8)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuopenjdk-6-jre-lib (6b23~pre11-0ubuntu1.11.10) @ oneiric2026-05-29ubuntu
redhatjava-1.6.0-ibm-1:1.6.0.14.0-1jpp.1.el5_92013-10-23redhat
redhatjava-1.4.2-ibm-sap-0:1.4.2.13.11.sap-1jpp.1.el52012-02-29redhat
redhatjava-1.6.0-ibm-1:1.6.0.10.0-1jpp.2.el52012-01-18redhat
redhatjava-1.4.2-ibm-0:1.4.2.13.11-1jpp.1.el52012-01-09redhat
redhatjava-1.5.0-ibm-1:1.5.0.13.0-1jpp.1.el52011-11-24redhat
redhatjava-1.6.0-sun-1:1.6.0.29-1jpp.1.el52011-10-19redhat
redhatjava-1.6.0-openjdk-1:1.6.0.0-1.40.1.9.10.el6_12011-10-18redhat

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
openjdk-66b11-9.1 ... 6b18~pre4-1 (58 versions)
  • every version up to 6b18-1.8.10-0~lenny2: fixed in 6b18-1.8.10-0~lenny2
—
Debian:6.0(1)
PackageVulnerable rangeFix by version rangeDependents
openjdk-66b18-1.8.10-0+squeeze1 ... 6b18-1.8.9-0.1~squeeze1 (16 versions)
  • every version up to 6b18-1.8.10-0+squeeze2: fixed in 6b18-1.8.10-0+squeeze2
—

Additional Vendor Advisories

(1)

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 2× in last 7d / 10× 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. 2026-10-09 20:00 UTCEPSS rescore
  2. 2026-10-07 23:38 UTCEPSS rescore
  3. 2026-09-30 14:58 UTCEPSS rescore
  4. 2026-09-29 08:21 UTCEG score recompute
  5. 2026-09-28 13:44 UTCEPSS rescore
  6. 2026-09-26 15:52 UTCEPSS rescore
  7. 2026-09-24 13:57 UTCEPSS rescore
  8. 2026-09-16 13:58 UTCEPSS rescore
  9. 2026-09-13 16:40 UTCEPSS rescore
  10. 2026-09-12 14:54 UTCEPSS rescore
  11. 2026-09-06 13:41 UTCEPSS rescore
  12. 2026-09-05 15:22 UTCEPSS rescore
  13. 2026-08-25 13:43 UTCEPSS rescore
  14. 2026-08-19 16:58 UTCEPSS rescore
  15. 2026-08-18 13:42 UTCEPSS rescore
  16. 2026-08-15 01:25 UTCEPSS rescore
  17. 2026-08-05 19:12 UTCEPSS rescore
  18. 2026-07-26 13:43 UTCEG score recompute▲ 7.50
  19. 2026-07-23 01:05 UTCEG score recompute▼ 7.60
  20. 2026-07-23 00:09 UTCEG score recompute▲ 7.60
  21. 2026-07-22 21:48 UTCEG score recompute▼ 9.00
  22. 2026-07-22 14:03 UTCEPSS rescore
  23. 2026-07-21 15:21 UTCEPSS rescore
  24. 2026-07-20 17:03 UTCEPSS rescore
  25. 2026-07-20 17:03 UTCEPSS rescore
Show 57 more
  1. 2026-07-19 02:25 UTCEPSS rescore
  2. 2026-07-19 02:25 UTCEPSS rescore
  3. 2026-07-15 16:54 UTCEPSS rescore
  4. 2026-07-15 16:54 UTCEPSS rescore
  5. 2026-07-13 22:25 UTCEPSS rescore
  6. 2026-07-06 16:23 UTCEPSS rescore
  7. 2026-07-05 02:26 UTCEPSS rescore
  8. 2026-07-02 14:01 UTCEPSS rescore
  9. 2026-06-30 23:19 UTCEPSS rescore
  10. 2026-06-30 23:19 UTCEPSS rescore
  11. 2026-06-29 14:02 UTCEPSS rescore
  12. 2026-06-28 04:53 UTCEPSS rescore
  13. 2026-06-28 04:52 UTCEPSS rescore
  14. 2026-06-25 13:46 UTCEPSS rescore
  15. 2026-06-24 14:02 UTCEPSS rescore
  16. 2026-06-24 14:02 UTCEPSS rescore
  17. 2026-06-23 21:30 UTCEPSS rescore
  18. 2026-06-23 21:30 UTCEPSS rescore
  19. 2026-06-22 14:22 UTCEPSS rescore
  20. 2026-06-22 14:22 UTCEPSS rescore
  21. 2026-06-21 01:56 UTCEPSS rescore
  22. 2026-06-21 01:56 UTCEPSS rescore
  23. 2026-06-18 17:49 UTCEPSS rescore
  24. 2026-06-18 17:49 UTCEPSS rescore
  25. 2026-06-16 17:49 UTCEPSS rescore
  26. 2026-06-15 17:44 UTCEPSS rescore
  27. 2026-06-13 22:57 UTCEPSS rescore
  28. 2026-06-13 22:57 UTCEPSS rescore
  29. 2026-06-12 23:08 UTCEPSS rescore
  30. 2026-06-10 22:14 UTCEPSS rescore
  31. 2026-06-10 13:17 UTCEPSS rescore
  32. 2026-06-08 14:14 UTCEPSS rescore
  33. 2026-06-08 14:14 UTCEPSS rescore
  34. 2026-06-07 15:22 UTCEPSS rescore
  35. 2026-06-07 15:22 UTCEPSS rescore
  36. 2026-06-05 22:44 UTCEPSS rescore
  37. 2026-05-31 22:28 UTCEPSS rescore
  38. 2026-05-31 22:28 UTCEPSS rescore
  39. 2026-05-29 06:29 UTCEG score recompute
  40. 2026-05-29 06:29 UTCVendor advisory
  41. 2026-05-29 06:29 UTCGHSA enrichment
  42. 2026-05-28 13:42 UTCEPSS rescore
  43. 2026-05-28 13:42 UTCEPSS rescore
  44. 2026-05-28 13:42 UTCEPSS rescore
  45. 2026-05-27 13:38 UTCEPSS rescore
  46. 2026-05-27 13:38 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
  48. 2026-05-22 21:15 UTCEPSS rescore
  49. 2026-05-22 21:15 UTCEPSS rescore
  50. 2026-05-20 22:37 UTCEPSS rescore
  51. 2026-05-20 22:37 UTCEPSS rescore
  52. 2026-05-20 22:37 UTCEPSS rescore
  53. 2026-05-20 11:21 UTCEPSS rescore
  54. 2026-05-20 11:21 UTCEPSS rescore
  55. 2026-05-20 11:21 UTCEPSS rescore
  56. 2026-05-18 21:29 UTCEPSS rescore
  57. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(3 references)

Working exploit code is in the public domain (2 Metasploit modules) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitauxiliary/scanner/misc/java_rmi_server✓ verified
    First seen Oct 15, 2011

    Java RMI Server Insecure Endpoint Code Execution Scanner

    Open source ↗
  • Metasploitexploit/multi/misc/java_rmi_server✓ verified
    First seen Oct 15, 2011

    Java RMI Server Insecure Default Configuration Java Code Execution

    Open source ↗
  • Exploit-DBEDB-17535✓ verified
    First seen Jul 15, 2011

    Java RMI - Server Insecure Default Configuration Java Code Execution (Metasploit)

    Open source ↗

Related CVEs(same product + same vendor)

Frequently asked(4)

What is CVE-2011-3556?
CVE-2011-3556 is a high vulnerability published on October 19, 2011. Unspecified vulnerability in the Java Runtime Environment component in Oracle Java SE JDK and JRE 7, 6 Update 27 and earlier, 5.0 Update 31 and earlier, 1.4.2_33 and earlier, and JRockit R28.1.4 and earlier allows remote attackers to affect confidentiality, integrity, and availability, related to…
When was CVE-2011-3556 disclosed?
CVE-2011-3556 was first published on October 19, 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-2011-3556 actively exploited?
CVE-2011-3556 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 76% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
How do I remediate CVE-2011-3556?
A fix for CVE-2011-3556 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2011-3556 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2011-3556

Explore →

Is Your Infrastructure Affected by CVE-2011-3556?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs