CVE-2004-1763: Buffer overflow in hsrun.exe for HAHTsite Scenario Server 5.1 Patch 06 (build 91) allows remote attackers to c

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HIGH 10.0DOWNGRADE

CVE-2004-1763 is a high-severity flaw (CVSS 10.0) affecting hahtsite scenario server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in hsrun.exe for HAHTsite Scenario Server 5.1 Patch 06 (build 91) allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long project name.

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	8.1% (top 5%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: haht commerce

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:08 UTCUpdated Record last modified

haht commerce hahtsite scenario server DOWNGRADE

Affected: 5.1 · 5.1_patch_1 · 5.1_patch_2 · 5.1_patch_3 · 5.1_patch_4 · 5.1_patch_5 · 5.1_patch_6

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.1

1. Check installed version

apt-cache policy hahtsite-scenario-server || rpm -q hahtsite-scenario-server || hahtsite-scenario-server --version

2. No fixed release: DOWNGRADE to a release before 5.1 (Debian / Ubuntu)

apt-cache madison hahtsite-scenario-server sudo apt install hahtsite-scenario-server=<VERSION_BEFORE_5.1> sudo apt-mark hold hahtsite-scenario-server

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

dnf --showduplicates list hahtsite-scenario-server sudo dnf downgrade hahtsite-scenario-server-<VERSION_BEFORE_5.1> sudo dnf versionlock add hahtsite-scenario-server

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-2004-1763?

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

Is CVE-2004-1763 being exploited?

CVE-2004-1763 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-2004-1763 affect?

CVE-2004-1763 affects hahtsite scenario server. Severity is high (CVSS 10.0). Buffer overflow in hsrun.exe for HAHTsite Scenario Server 5.1 Patch 06 (build 91) allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long project name.

How urgent is CVE-2004-1763?

Priority 64/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

References

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