CVE-2003-0788: Unknown vulnerability in the Internet Printing Protocol (IPP) implementation in CUPS before 1.1.19 allows remo

Routine

MEDIUM 5.0DOWNGRADE

CVE-2003-0788 is a medium-severity flaw (CVSS 5.0) affecting cups. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unknown vulnerability in the Internet Printing Protocol (IPP) implementation in CUPS before 1.1.19 allows remote attackers to cause a denial of service (CPU consumption from a "busy loop") via certain inputs to the IPP port (TCP 631).

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Published	2003-12-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: easy software products

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

Am I affected?

Timeline

2003-12-01 05:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

easy software products cups DOWNGRADE

Affected: 1.0.4 · 1.0.4_8 · 1.1.1 · 1.1.4 · 1.1.4_2 · 1.1.4_3 · 1.1.4_5 · 1.1.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.4 (Debian / Ubuntu)

apt-cache madison cups sudo apt install cups=<VERSION_BEFORE_1.0.4> sudo apt-mark hold cups

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

dnf --showduplicates list cups sudo dnf downgrade cups-<VERSION_BEFORE_1.0.4> sudo dnf versionlock add cups

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-2003-0788?

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

Is CVE-2003-0788 being exploited?

CVE-2003-0788 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-2003-0788 affect?

CVE-2003-0788 affects cups. Severity is medium (CVSS 5.0). Unknown vulnerability in the Internet Printing Protocol (IPP) implementation in CUPS before 1.1.19 allows remote attackers to cause a denial of service (CPU consumption from a "busy loop") via certain inputs to the IPP port (TCP 631).

How urgent is CVE-2003-0788?

Priority 38/100. No elevated risk signals yet.

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CVE-2026-39314 MEDIUM 4.0 UPGRADE OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems
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References

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