CVE-2003-0651: Buffer overflow in the mylo_log logging function for mod_mylo 0.2.1 and earlier allows remote attackers to exe

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HIGH 7.5DOWNGRADE

CVE-2003-0651 is a high-severity flaw (CVSS 7.5) affecting mod mylo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in the mylo_log logging function for mod_mylo 0.2.1 and earlier allows remote attackers to execute arbitrary code via a long HTTP GET request.

Why this priority

High 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	7.5 (High)
EPSS exploit chance	8.6% (top 5%)
CISA exploited list	No
Published	2003-08-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mod mylo

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

Am I affected?

Timeline

2003-08-27 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

mod mylo mod mylo DOWNGRADE

Affected: 0.1 · 2.0 · 2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.1

1. Check installed version

apt-cache policy mod-mylo || rpm -q mod-mylo || mod-mylo --version

2. No fixed release: DOWNGRADE to a release before 0.1 (Debian / Ubuntu)

apt-cache madison mod-mylo sudo apt install mod-mylo=<VERSION_BEFORE_0.1> sudo apt-mark hold mod-mylo

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

dnf --showduplicates list mod-mylo sudo dnf downgrade mod-mylo-<VERSION_BEFORE_0.1> sudo dnf versionlock add mod-mylo

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: Apache 1.3.x mod_mylo - Remote Code Execution

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-2003-0651?

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

Is CVE-2003-0651 being exploited?

CVE-2003-0651 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-2003-0651 affect?

CVE-2003-0651 affects mod mylo. Severity is high (CVSS 7.5). Buffer overflow in the mylo_log logging function for mod_mylo 0.2.1 and earlier allows remote attackers to execute arbitrary code via a long HTTP GET request.

How urgent is CVE-2003-0651?

Priority 55/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

References

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