CVE-2005-3421: estcmd in Hyper Estraier 1.0.1 on Windows systems allows remote attackers to read unauthorized files via a cra

Routine

MEDIUM 5.0DOWNGRADE

CVE-2005-3421 is a medium-severity flaw (CVSS 5.0) affecting hyper estraier. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

estcmd in Hyper Estraier 1.0.1 on Windows systems allows remote attackers to read unauthorized files via a crafted search request for a filename that contains Unicode characters.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2005-11-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: hyper estraier

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

Am I affected?

Timeline

2005-11-01 21:02 UTCPublished CVE record published
2026-06-16 22:16 UTCUpdated Record last modified

hyper estraier hyper estraier DOWNGRADE

Affected: 1.0 · 1.0.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy hyper-estraier || rpm -q hyper-estraier || hyper-estraier --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison hyper-estraier sudo apt install hyper-estraier=<VERSION_BEFORE_1.0> sudo apt-mark hold hyper-estraier

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

dnf --showduplicates list hyper-estraier sudo dnf downgrade hyper-estraier-<VERSION_BEFORE_1.0> sudo dnf versionlock add hyper-estraier

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-2005-3421?

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

Is CVE-2005-3421 being exploited?

CVE-2005-3421 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-2005-3421 affect?

CVE-2005-3421 affects hyper estraier. Severity is medium (CVSS 5.0). estcmd in Hyper Estraier 1.0.1 on Windows systems allows remote attackers to read unauthorized files via a crafted search request for a filename that contains Unicode characters.

How urgent is CVE-2005-3421?

Priority 36/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities

Related CVEs

CVE-2006-3671 HIGH 7.5 UPGRADE Cross-site request forgery (CSRF) vulnerability in the communicate function in estmaster.c for Hyper Estraier

References

← Back to latest CVEs