CVE-2006-4099: Business Objects Crystal Enterprise 9 and 10 generates predictable session identifiers, which allows remote at

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HIGH 7.5DOWNGRADE

CVE-2006-4099 is a high-severity flaw (CVSS 7.5) affecting crystal enterprise. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Business Objects Crystal Enterprise 9 and 10 generates predictable session identifiers, which allows remote attackers to hijack sessions of other users via WCSID cookie values.

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	1.7% (top 22%)
CISA exploited list	No
Published	2006-11-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: businessobjects

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

Am I affected?

Timeline

2006-11-29 17:28 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

businessobjects crystal enterprise DOWNGRADE

Affected: 9 · 10

Fixed in: no fixed release known

Safe to downgrade to: a release before 9

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 9 (Debian / Ubuntu)

apt-cache madison crystal-enterprise sudo apt install crystal-enterprise=<VERSION_BEFORE_9> sudo apt-mark hold crystal-enterprise

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

dnf --showduplicates list crystal-enterprise sudo dnf downgrade crystal-enterprise-<VERSION_BEFORE_9> sudo dnf versionlock add crystal-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-2006-4099?

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

Is CVE-2006-4099 being exploited?

CVE-2006-4099 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-2006-4099 affect?

CVE-2006-4099 affects crystal enterprise. Severity is high (CVSS 7.5). Business Objects Crystal Enterprise 9 and 10 generates predictable session identifiers, which allows remote attackers to hijack sessions of other users via WCSID cookie values.

How urgent is CVE-2006-4099?

Priority 46/100. High severity

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References

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