CVE-2003-0510: Format string vulnerability in ezbounce 1.0 through 1.50 allows remote attackers to execute arbitrary code via

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HIGH 7.5DOWNGRADE

CVE-2003-0510 is a high-severity flaw (CVSS 7.5) affecting ezbounce. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Format string vulnerability in ezbounce 1.0 through 1.50 allows remote attackers to execute arbitrary code via the "sessions" command.

Why this priority

High severity
EPSS top 6%: 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	7.4% (top 6%)
CISA exploited list	No
Published	2003-08-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ezbounce

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

Am I affected?

Timeline

2003-08-07 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

ezbounce ezbounce DOWNGRADE

Affected: 1.0 · 1.1 · 1.2 · 1.3 · 1.4 · 1.5 · 1.6 · 1.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

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

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

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

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

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: ezbounce 1.0/1.5 - Format String

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-2003-0510?

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

Is CVE-2003-0510 being exploited?

CVE-2003-0510 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-2003-0510 affect?

CVE-2003-0510 affects ezbounce. Severity is high (CVSS 7.5). Format string vulnerability in ezbounce 1.0 through 1.50 allows remote attackers to execute arbitrary code via the "sessions" command.

How urgent is CVE-2003-0510?

Priority 55/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

References

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