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7.5
Red Hat Postfix could let attackers read or alter email
published 2 months ago
Summary
The Postfix mail server included in Red Hat Linux has a security weakness that may allow unauthorized parties to view or change email messages. This could expose sensitive information or disrupt communications. Apply the latest Red Hat security update for Postfix as soon as possible to close the gap.
What to do
- Update redhat postfix to version 2:2.10.1-9.el7_9.1.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Red Hat:rhel_els:7 | redhat | postfix |
< 2:2.10.1-9.el7_9.1 Fix: upgrade to 2:2.10.1-9.el7_9.1
|
Original advisory text
Red Hat Security Advisory: postfix security update
References
- https://access.redhat.com/errata/RHSA-2026:57174 Vendor Advisory
- https://access.redhat.com/security/updates/classification/#important Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2466488 Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_57174.... Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-43964 Third Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-43964 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-43964 Vendor Advisory
- https://www.mail-archive.com/[email protected]/msg00110.html Third Party Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker partial control (estimated)
Timeline
Published20 Aug 2026
Updated27 Aug 2026
First seen27 Aug 2026
Sources
RHSA-2026:57174 · OSV
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