CVE-2004-0593: Sygate Enforcer 3.5MR1 and earlier passes broadcast traffic before authentication, which could allow remote at

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HIGH 7.5UPGRADEDOWNGRADE

CVE-2004-0593 is a high-severity flaw (CVSS 7.5) affecting enforcer, secure enterprise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sygate Enforcer 3.5MR1 and earlier passes broadcast traffic before authentication, which could allow remote attackers to bypass filtering rules.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2004-09-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sygate technologies

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

Am I affected?

Timeline

2004-09-28 04:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

sygate technologies enforcer UPGRADE

Affected: <= 3.5mr1

Fixed in: newer than 3.5mr1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.5mr1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade enforcer

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade enforcer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

sygate technologies secure enterprise DOWNGRADE

Affected: 3.0 · 3.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy secure-enterprise || rpm -q secure-enterprise || secure-enterprise --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison secure-enterprise sudo apt install secure-enterprise=<VERSION_BEFORE_3.0> sudo apt-mark hold secure-enterprise

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

dnf --showduplicates list secure-enterprise sudo dnf downgrade secure-enterprise-<VERSION_BEFORE_3.0> sudo dnf versionlock add secure-enterprise

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-2004-0593?

enforcer: upgrade to newer than 3.5mr1; secure enterprise: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-0593 being exploited?

CVE-2004-0593 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-2004-0593 affect?

CVE-2004-0593 affects enforcer, secure enterprise. Severity is high (CVSS 7.5). Sygate Enforcer 3.5MR1 and earlier passes broadcast traffic before authentication, which could allow remote attackers to bypass filtering rules.

How urgent is CVE-2004-0593?

Priority 45/100. High severity

Related CVEs

CVE-2003-0931 MEDIUM 5.0 UPGRADE Sygate Enforcer 4.0 earlier allows remote attackers to cause a denial of service (service hang) by replaying a

References

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