CVE-2009-1039: Buffer overflow in CDex 1.70b2 allows remote attackers to execute arbitrary code via a crafted Info header in

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HIGH 7.5DOWNGRADE

CVE-2009-1039 is a high-severity flaw (CVSS 7.5) affecting cdex. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in CDex 1.70b2 allows remote attackers to execute arbitrary code via a crafted Info header in an Ogg Vorbis (.ogg) file.

Why this priority

High severity
EPSS top 7%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	5.3% (top 7%)
CISA exploited list	No
Weakness	CWE-119
Published	2009-03-20
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: cdexos

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

Am I affected?

Timeline

2009-03-20 18:30 UTCPublished CVE record published
2026-06-16 23:06 UTCUpdated Record last modified

cdexos cdex DOWNGRADE

Affected: 170b2

Fixed in: no fixed release known

Safe to downgrade to: a release before 170b2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 170b2 (Debian / Ubuntu)

apt-cache madison cdex sudo apt install cdex=<VERSION_BEFORE_170b2> sudo apt-mark hold cdex

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

dnf --showduplicates list cdex sudo dnf downgrade cdex-<VERSION_BEFORE_170b2> sudo dnf versionlock add cdex

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: CDex 1.70b2 (Windows XP SP3) - '.ogg' Local Buffer Overflow

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-2009-1039?

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

Is CVE-2009-1039 being exploited?

CVE-2009-1039 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-2009-1039 affect?

CVE-2009-1039 affects cdex. Severity is high (CVSS 7.5). Buffer overflow in CDex 1.70b2 allows remote attackers to execute arbitrary code via a crafted Info header in an Ogg Vorbis (.ogg) file.

How urgent is CVE-2009-1039?

Priority 54/100. High severity; EPSS top 7%: very likely to be exploited; Public exploit reference

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References

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