CVE-2003-1502: mod_throttle 3.0 allows local users with Apache privileges to access shared memory that points to a file that

Routine

MEDIUM 4.6WATCHLISTDOWNGRADE

CVE-2003-1502 is a medium-severity flaw (CVSS 4.6) affecting mod throttle. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

mod_throttle 3.0 allows local users with Apache privileges to access shared memory that points to a file that is writable by the apache user, which could allow local users to gain privileges.

Why this priority

On your watchlist

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Published	2003-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: snert.com

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

Am I affected?

Timeline

2003-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:04 UTCUpdated Record last modified

snert.com mod throttle DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison mod-throttle sudo apt install mod-throttle=<VERSION_BEFORE_3.0> sudo apt-mark hold mod-throttle

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

dnf --showduplicates list mod-throttle sudo dnf downgrade mod-throttle-<VERSION_BEFORE_3.0> sudo dnf versionlock add mod-throttle

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-2003-1502?

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

Is CVE-2003-1502 being exploited?

CVE-2003-1502 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-2003-1502 affect?

CVE-2003-1502 affects mod throttle. Severity is medium (CVSS 4.6). mod_throttle 3.0 allows local users with Apache privileges to access shared memory that points to a file that is writable by the apache user, which could allow local users to gain privileges.

How urgent is CVE-2003-1502?

Priority 26/100. On your watchlist

References

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