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

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MEDIUM 5.0DOWNGRADE

CVE-2002-1566 is a medium-severity flaw (CVSS 5.0) affecting netris. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

netris 0.5, and possibly other versions before 0.52, when running with the -w (wait) option, allows remote attackers to cause a denial of service (crash) via a long string to port 9284.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	3.4% (top 11%)
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 21:59 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.

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: Netris 0.3/0.4/0.5 - Remote Memory Corruption

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-2002-1566?

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

Is CVE-2002-1566 being exploited?

CVE-2002-1566 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-2002-1566 affect?

CVE-2002-1566 affects netris. Severity is medium (CVSS 5.0). netris 0.5, and possibly other versions before 0.52, when running with the -w (wait) option, allows remote attackers to cause a denial of service (crash) via a long string to port 9284.

How urgent is CVE-2002-1566?

Priority 45/100. Public exploit reference

Related CVEs

CVE-2003-0685 HIGH 7.5 DOWNGRADE Buffer overflow in Netris 0.52 and earlier, and possibly other versions, allows remote malicious Netris server

References

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