CVE-2001-1349: Sendmail before 8.11.4, and 8.12.0 before 8.12.0.Beta10, allows local users to cause a denial of service and p

Routine

LOW 3.7DOWNGRADE

CVE-2001-1349 is a low-severity flaw (CVSS 3.7) affecting sendmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sendmail before 8.11.4, and 8.12.0 before 8.12.0.Beta10, allows local users to cause a denial of service and possibly corrupt the heap and gain privileges via race conditions in signal handlers.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	3.7 (Low)
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Published	2001-05-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sendmail

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

Am I affected?

Timeline

2001-05-28 04:00 UTCPublished CVE record published
2026-06-16 21:56 UTCUpdated Record last modified

sendmail sendmail DOWNGRADE

Affected: 8.10 · 8.10.1 · 8.10.2 · 8.11.0 · 8.11.1 · 8.11.2 · 8.11.3 · 8.12 beta7

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.10

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 8.10 (Debian / Ubuntu)

apt-cache madison sendmail sudo apt install sendmail=<VERSION_BEFORE_8.10> sudo apt-mark hold sendmail

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

dnf --showduplicates list sendmail sudo dnf downgrade sendmail-<VERSION_BEFORE_8.10> sudo dnf versionlock add sendmail

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-2001-1349?

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

Is CVE-2001-1349 being exploited?

CVE-2001-1349 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-2001-1349 affect?

CVE-2001-1349 affects sendmail. Severity is low (CVSS 3.7). Sendmail before 8.11.4, and 8.12.0 before 8.12.0.Beta10, allows local users to cause a denial of service and possibly corrupt the heap and gain privileges via race conditions in signal handlers.

How urgent is CVE-2001-1349?

Priority 27/100. Public exploit reference

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References

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