REDHAT-BUG-2466488: High severity Postfix Postfix vulnerability

Published May 4, 2026
·
Updated

Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.

Affected Software

1 affected component
Postfix Postfix<3.8.16, <3.9.10, <3.10.9

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Postfix to a version that resolves this vulnerability.

    Fixed in 3.8.16
  2. Upgrade

    Upgrade Postfix to a version that resolves this vulnerability.

    Fixed in 3.9.10
  3. Upgrade

    Upgrade Postfix to a version that resolves this vulnerability.

    Fixed in 3.10.9

Event History

May 4, 2026
Data Sourced
via Red Hat·07:01 PM
DescriptionSeverityAffected Software
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of REDHAT-BUG-2466488?

The severity of REDHAT-BUG-2466488 is rated as high with a score of 7.

2

What are the affected versions of Postfix in REDHAT-BUG-2466488?

Postfix versions before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 are affected by REDHAT-BUG-2466488.

3

How do I fix REDHAT-BUG-2466488?

To fix REDHAT-BUG-2466488, upgrade to the latest versions of Postfix that are not affected by this vulnerability.

4

What type of vulnerability is described in REDHAT-BUG-2466488?

REDHAT-BUG-2466488 describes a buffer over-read vulnerability that can lead to a process crash.

5

What impact does REDHAT-BUG-2466488 have on Postfix?

The impact of REDHAT-BUG-2466488 can result in process crashes when an enhanced status code is misformatted.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203