CVE-2002-1313: nullmailer 1.00RC5 and earlier allows local users to cause a denial of service via an email to a local user th

Routine

LOW 2.1DOWNGRADE

CVE-2002-1313 is a low-severity flaw (CVSS 2.1) affecting nullmailer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

nullmailer 1.00RC5 and earlier allows local users to cause a denial of service via an email to a local user that does not exist, which generates an error that causes nullmailer to stop sending mail to all users.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Published	2002-11-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: nullmailer

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

Am I affected?

Timeline

2002-11-29 05:00 UTCPublished CVE record published
2026-06-16 21:59 UTCUpdated Record last modified

nullmailer nullmailer DOWNGRADE

Affected: 1.0rc5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0rc5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0rc5 (Debian / Ubuntu)

apt-cache madison nullmailer sudo apt install nullmailer=<VERSION_BEFORE_1.0rc5> sudo apt-mark hold nullmailer

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

dnf --showduplicates list nullmailer sudo dnf downgrade nullmailer-<VERSION_BEFORE_1.0rc5> sudo dnf versionlock add nullmailer

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-2002-1313?

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

Is CVE-2002-1313 being exploited?

CVE-2002-1313 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-2002-1313 affect?

CVE-2002-1313 affects nullmailer. Severity is low (CVSS 2.1). nullmailer 1.00RC5 and earlier allows local users to cause a denial of service via an email to a local user that does not exist, which generates an error that causes nullmailer to stop sending mail to all users.

How urgent is CVE-2002-1313?

Priority 14/100. No elevated risk signals yet.

Related CVEs

CVE-2013-4223 MEDIUM 5.0 DOWNGRADE The Gentoo Nullmailer package before 1.11-r2 uses world-readable permissions for /etc/nullmailer/remotes, whic

References

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