CVE-2002-1322: Rational ClearCase 4.1, 2002.05, and possibly other versions allows remote attackers to cause a denial of serv

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MEDIUM 5.0DOWNGRADE

CVE-2002-1322 is a medium-severity flaw (CVSS 5.0) affecting clearcase. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Rational ClearCase 4.1, 2002.05, and possibly other versions allows remote attackers to cause a denial of service (crash) via certain packets to port 371, e.g. via nmap.

Why this priority

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	5.0 (Medium)
EPSS exploit chance	7.2% (top 6%)
CISA exploited list	No
Published	2002-12-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: rational software

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

Am I affected?

Timeline

2002-12-11 05:00 UTCPublished CVE record published
2026-06-16 21:59 UTCUpdated Record last modified

rational software clearcase DOWNGRADE

Affected: 4.1 · 2002-05-00

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.1 (Debian / Ubuntu)

apt-cache madison clearcase sudo apt install clearcase=<VERSION_BEFORE_4.1> sudo apt-mark hold clearcase

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

dnf --showduplicates list clearcase sudo dnf downgrade clearcase-<VERSION_BEFORE_4.1> sudo dnf versionlock add clearcase

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: Rational ClearCase 4.1 - Portscan Denial of Service

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-2002-1322?

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

Is CVE-2002-1322 being exploited?

CVE-2002-1322 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-2002-1322 affect?

CVE-2002-1322 affects clearcase. Severity is medium (CVSS 5.0). Rational ClearCase 4.1, 2002.05, and possibly other versions allows remote attackers to cause a denial of service (crash) via certain packets to port 371, e.g. via nmap.

How urgent is CVE-2002-1322?

Priority 46/100. EPSS top 6%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2001-0855 HIGH 7.2 DOWNGRADE Buffer overflow in db_loader in ClearCase 4.2 and earlier allows local users to gain root privileges via a lon

References

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