CVE-2002-2022: Format string vulnerability in Kaffe OpenVM 1.0.6 and earlier allows local users to execute arbitrary code, wh

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HIGH 7.2DOWNGRADE

CVE-2002-2022 is a high-severity flaw (CVSS 7.2) affecting kaffe openvm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in Kaffe OpenVM 1.0.6 and earlier allows local users to execute arbitrary code, when a java.lang.NoClassDefFoundError is thrown, via format specifiers in the forName attribute.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: kaffe

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:00 UTCUpdated Record last modified

kaffe kaffe openvm DOWNGRADE

Affected: 1.0.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.6

1. Check installed version

apt-cache policy kaffe-openvm || rpm -q kaffe-openvm || kaffe-openvm --version

2. No fixed release: DOWNGRADE to a release before 1.0.6 (Debian / Ubuntu)

apt-cache madison kaffe-openvm sudo apt install kaffe-openvm=<VERSION_BEFORE_1.0.6> sudo apt-mark hold kaffe-openvm

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kaffe-openvm sudo dnf downgrade kaffe-openvm-<VERSION_BEFORE_1.0.6> sudo dnf versionlock add kaffe-openvm

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2002-2022?

kaffe openvm: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-2022 being exploited?

CVE-2002-2022 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2002-2022 affect?

CVE-2002-2022 affects kaffe openvm. Severity is high (CVSS 7.2). Format string vulnerability in Kaffe OpenVM 1.0.6 and earlier allows local users to execute arbitrary code, when a java.lang.NoClassDefFoundError is thrown, via format specifiers in the forName attribute.

How urgent is CVE-2002-2022?

Priority 43/100. High severity; Public exploit reference

Software pages

Java vulnerabilities

References

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