CVE-2004-1771: Scalable OGo (SOGo) 1.0 allows remote authenticated users to bypass intended permissions and view private appo

Routine

MEDIUM 5.0DOWNGRADE

CVE-2004-1771 is a medium-severity flaw (CVSS 5.0) affecting scalable ogo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Scalable OGo (SOGo) 1.0 allows remote authenticated users to bypass intended permissions and view private appointments of other users.

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 27%)
CISA exploited list	No
Published	2004-11-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: open group

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

Am I affected?

Timeline

2004-11-30 05:00 UTCPublished CVE record published
2026-06-16 22:08 UTCUpdated Record last modified

open group scalable ogo DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy scalable-ogo || rpm -q scalable-ogo || scalable-ogo --version

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

apt-cache madison scalable-ogo sudo apt install scalable-ogo=<VERSION_BEFORE_1.0> sudo apt-mark hold scalable-ogo

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

dnf --showduplicates list scalable-ogo sudo dnf downgrade scalable-ogo-<VERSION_BEFORE_1.0> sudo dnf versionlock add scalable-ogo

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-2004-1771?

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

Is CVE-2004-1771 being exploited?

CVE-2004-1771 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-2004-1771 affect?

CVE-2004-1771 affects scalable ogo. Severity is medium (CVSS 5.0). Scalable OGo (SOGo) 1.0 allows remote authenticated users to bypass intended permissions and view private appointments of other users.

How urgent is CVE-2004-1771?

Priority 36/100. No elevated risk signals yet.

References

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