CVE-2003-0538: The mailcap file for mozart 1.2.5 and earlier causes Oz applications to be passed to the Oz interpreter, which

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HIGH 7.5DOWNGRADE

CVE-2003-0538 is a high-severity flaw (CVSS 7.5) affecting mozart. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The mailcap file for mozart 1.2.5 and earlier causes Oz applications to be passed to the Oz interpreter, which allows remote attackers to execute arbitrary Oz programs in a MIME-aware client program.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Published	2003-08-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mozart

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

Am I affected?

Timeline

2003-08-18 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

mozart mozart DOWNGRADE

Affected: 1.2.3 · 1.2.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2.3

1. Check installed version

apt-cache policy mozart || rpm -q mozart || mozart --version

2. No fixed release: DOWNGRADE to a release before 1.2.3 (Debian / Ubuntu)

apt-cache madison mozart sudo apt install mozart=<VERSION_BEFORE_1.2.3> sudo apt-mark hold mozart

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

dnf --showduplicates list mozart sudo dnf downgrade mozart-<VERSION_BEFORE_1.2.3> sudo dnf versionlock add mozart

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-2003-0538?

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

Is CVE-2003-0538 being exploited?

CVE-2003-0538 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-2003-0538 affect?

CVE-2003-0538 affects mozart. Severity is high (CVSS 7.5). The mailcap file for mozart 1.2.5 and earlier causes Oz applications to be passed to the Oz interpreter, which allows remote attackers to execute arbitrary Oz programs in a MIME-aware client program.

How urgent is CVE-2003-0538?

Priority 44/100. High severity

References

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