CVE-2003-0685: Buffer overflow in Netris 0.52 and earlier, and possibly other versions, allows remote malicious Netris server

This month

HIGH 7.5DOWNGRADE

CVE-2003-0685 is a high-severity flaw (CVSS 7.5) affecting netris. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in Netris 0.52 and earlier, and possibly other versions, allows remote malicious Netris servers to execute arbitrary code on netris clients via a long server response.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.4% (top 16%)
CISA exploited list	No
Published	2003-08-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: netris

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

netris netris DOWNGRADE

Affected: 0.3 · 0.4 · 0.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.3 (Debian / Ubuntu)

apt-cache madison netris sudo apt install netris=<VERSION_BEFORE_0.3> sudo apt-mark hold netris

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

dnf --showduplicates list netris sudo dnf downgrade netris-<VERSION_BEFORE_0.3> sudo dnf versionlock add netris

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-2003-0685?

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

Is CVE-2003-0685 being exploited?

CVE-2003-0685 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-2003-0685 affect?

CVE-2003-0685 affects netris. Severity is high (CVSS 7.5). Buffer overflow in Netris 0.52 and earlier, and possibly other versions, allows remote malicious Netris servers to execute arbitrary code on netris clients via a long server response.

How urgent is CVE-2003-0685?

Priority 52/100. High severity; Public exploit reference

Related CVEs

CVE-2002-1566 MEDIUM 5.0 DOWNGRADE netris 0.5, and possibly other versions before 0.52, when running with the -w (wait) option, allows remote att

References

← Back to latest CVEs