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NVD / CVE Program· CNA mitre

CVE-2009-2721: Multiple unspecified vulnerabilities in the Provider class in Sun Java SE 5.0 before Update 20 have unknown impact and attack vectors, aka B

Noroxi assessment

Priority: Plan (action score 41/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.4% (FIRST EPSS); higher than 84.3% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: java-1.5.0-sun (Red Hat:rhel_extras:4) 0:1.5.0.20-1jpp.1.el4; java-1.5.0-sun-demo (Red Hat:rhel_extras:4) 0:1.5.0.20-1jpp.1.el4; java-1.5.0-sun-devel (Red Hat:rhel_extras:4) 0:1.5.0.20-1jpp.1.el4.

Add it to your regular patch cycle. Upgrade to java-1.5.0-sun (Red Hat:rhel_extras:4) 0:1.5.0.20-1jpp.1.el4; java-1.5.0-sun-demo (Red Hat:rhel_extras:4) 0:1.5.0.20-1jpp.1.el4; java-1.5.0-sun-devel (Red Hat:rhel_extras:4) 0:1.5.0.20-1jpp.1.el4 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Multiple unspecified vulnerabilities in the Provider class in Sun Java SE 5.0 before Update 20 have unknown impact and attack vectors, aka BugId 6406003.

CriticalCVSS 10.0 · v2.0—No exploit Fix available
Published
Aug 10, 2009
Updated
Jun 16, 2026
EPSS
2.4% · 84th percentile
CWE
—

Report tools

JSON

Action score

41

Plan

Add it to your regular patch cycle.

CVSS
40 / 40 · 10.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.4%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2009-2721

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sunjava se

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sun java seup to 5.0 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:rhel_extras:4java-1.5.0-sunbefore 0:1.5.0.20-1jpp.1.el40:1.5.0.20-1jpp.1.el4
Red Hat:rhel_extras:4java-1.5.0-sun-demobefore 0:1.5.0.20-1jpp.1.el40:1.5.0.20-1jpp.1.el4
Red Hat:rhel_extras:4java-1.5.0-sun-develbefore 0:1.5.0.20-1jpp.1.el40:1.5.0.20-1jpp.1.el4
Red Hat:rhel_extras:4java-1.5.0-sun-jdbcbefore 0:1.5.0.20-1jpp.1.el40:1.5.0.20-1jpp.1.el4
Red Hat:rhel_extras:4java-1.5.0-sun-pluginbefore 0:1.5.0.20-1jpp.1.el40:1.5.0.20-1jpp.1.el4
Red Hat:rhel_extras:4java-1.5.0-sun-srcbefore 0:1.5.0.20-1jpp.1.el40:1.5.0.20-1jpp.1.el4
Red Hat:rhel_extras:5::clientjava-1.5.0-sunbefore 0:1.5.0.20-1jpp.1.el50:1.5.0.20-1jpp.1.el5
Red Hat:rhel_extras:5::clientjava-1.5.0-sun-demobefore 0:1.5.0.20-1jpp.1.el50:1.5.0.20-1jpp.1.el5
Red Hat:rhel_extras:5::clientjava-1.5.0-sun-develbefore 0:1.5.0.20-1jpp.1.el50:1.5.0.20-1jpp.1.el5
Red Hat:rhel_extras:5::clientjava-1.5.0-sun-jdbcbefore 0:1.5.0.20-1jpp.1.el50:1.5.0.20-1jpp.1.el5
Red Hat:rhel_extras:5::clientjava-1.5.0-sun-pluginbefore 0:1.5.0.20-1jpp.1.el50:1.5.0.20-1jpp.1.el5
Red Hat:rhel_extras:5::clientjava-1.5.0-sun-srcbefore 0:1.5.0.20-1jpp.1.el50:1.5.0.20-1jpp.1.el5

Same product

sun: all records

Other highest-scoring records for the same primary product.

  • CVE-2009-2723Unspecified vulnerability in deserialization in the Provider class in Sun Java SE 5.0 before Update 20 has unknown impact and attack vectors
    41Plan
  • CVE-2009-2722Multiple unspecified vulnerabilities in the Provider class in Sun Java SE 5.0 before Update 20 have unknown impact and attack vectors, aka B
    41Plan
  • CVE-2009-2689JDK13Services.getProviders in Sun Java SE 5.0 before Update 20 and 6 before Update 15, and OpenJDK, grants full privileges to instances of u
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2009-2719Aug 10, 2009 · The Java Web Start implementation in Sun Java SE 6 before Update 15 allows context-dependent attackers to cause a denial of service (NullPoi
    21Monitor
  • ← EarlierCVE-2009-2720Aug 10, 2009 · Unspecified vulnerability in the javax.swing.plaf.synth.SynthContext.isSubregion method in the Swing implementation in Sun Java SE 6 before
    21Monitor
  • Later →CVE-2009-2724Aug 10, 2009 · Race condition in the java.lang package in Sun Java SE 5.0 before Update 20 has unknown impact and attack vectors, related to a "3Y Race con
    37Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:java-1.5.0-sun0:1.5.0.20-1jpp.1.el4 · Red Hat:rhel_extras:4Package registry (OSV)
red hat:java-1.5.0-sun-demo0:1.5.0.20-1jpp.1.el4 · Red Hat:rhel_extras:4Package registry (OSV)
red hat:java-1.5.0-sun-devel0:1.5.0.20-1jpp.1.el4 · Red Hat:rhel_extras:4Package registry (OSV)
red hat:java-1.5.0-sun-jdbc0:1.5.0.20-1jpp.1.el4 · Red Hat:rhel_extras:4Package registry (OSV)
red hat:java-1.5.0-sun-plugin0:1.5.0.20-1jpp.1.el4 · Red Hat:rhel_extras:4Package registry (OSV)
red hat:java-1.5.0-sun-src0:1.5.0.20-1jpp.1.el4 · Red Hat:rhel_extras:4Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
C · data or configuration can be modified
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
C
Integrity impact
C
Availability impact
C

Weakness class (CWE)

—

CVSS vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records