CVE-2026-15811

MEDIUM

Kronosnet: kronosnet: encryption key exposure in memory after cryptographic configuration changes

Title source: cna
STIX 2.1

Description

A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.

References (2)

Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-15811
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2500849
https://bugzilla.redhat.com/show_bug.cgi?id=2500849

Scores

CVSS v3 5.8
EPSS 0.0006
EPSS Percentile 0.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-212
Status published
Products (4)
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat OpenShift Container Platform 4
Published Jul 21, 2026
Tracked Since Jul 21, 2026