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SUSE Postfix Moderate Buffer Overread Advisory SUSE-SU-2026-2781-1

suse
Calendar Grey July 6, 2026
Dist Suse Esm H88
A security update for postfix addresses a moderate-rated buffer overread issue in SUSE's products. Install now to protect.
An update that solves one vulnerability can now be installed.

Summary

## This update for postfix fixes the following issue * CVE-2026-43964: buffer overread and process crash via an enhanced status code that lacks text after the third number (bsc#1264062). ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: * Legacy Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Legacy-15-SP7-2026-2781=1 * Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2781=1 * openSUSE Leap 15.6 zypper in -t patch SUSE-2026-2781=1 * Server Applications Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-2781=1 ## Package List: * Legacy Module 15-SP7 (aarch64 ppc64le s390x x86_64)

Topics%20covered

Topics Covered

security advisory moderate SuSE postfix buffer overread process crash

References

* bsc#1264062

Cross-

* CVE-2026-43964

CVSS scores:

* CVE-2026-43964 ( SUSE ): 8.2

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

* CVE-2026-43964 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-43964 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

* CVE-2026-43964 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-43964 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

* Basesystem Module 15-SP7

* Legacy Module 15-SP7

* openSUSE Leap 15.6

* Server Applications Module 15-SP7

* SUSE Linux Enterprise Desktop 15 SP7

* SUSE Linux Enterprise Real Time 15 SP7

* SUSE Linux Enterprise Server 15 SP7

* SUSE Linux Enterprise Server for SAP Applications 15 SP7

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2781-1
Release Date: 2026-07-06T14:12:18Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate SuSE postfix buffer overread process crash

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