Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client.

Project Subscriptions

Vendors Products
Advisories
Source ID Title
Debian DSA Debian DSA DSA-6309-1 exim4 security update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 30 May 2026 04:30:00 +0000

Type Values Removed Values Added
References

Sat, 30 May 2026 03:45:00 +0000

Type Values Removed Values Added
Title Exim Proxy Misconfiguration Causes Uninitialized Memory Disclosure

Sat, 30 May 2026 02:15:00 +0000

Type Values Removed Values Added
Description Exim 4.88 before 4.99.4, in some proxy configurations, mishandles certain short payloads, leading to disclosure of uninitialized stack memory values to a client.
First Time appeared Exim
Exim exim
Weaknesses CWE-839
CPEs cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
Vendors & Products Exim
Exim exim
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-05-30T03:08:42.289Z

Reserved: 2026-05-25T17:51:46.146Z

Link: CVE-2026-48840

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-30T02:16:19.790

Modified: 2026-05-30T04:17:22.890

Link: CVE-2026-48840

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-30T04:00:09Z

Weaknesses