Bug 2459305 (CVE-2026-32624)

Summary:	CVE-2026-32624 xrdp: xrdp: Denial of Service via crafted username and domain name
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	fedora
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in xrdp, an open-source Remote Desktop Protocol (RDP) server. An unauthenticated remote attacker can trigger a heap-based buffer overflow by sending a crafted, excessively long username and domain name. This vulnerability exists when the `domain_user_separator` is explicitly configured in `xrdp.ini`. Successful exploitation can lead to a Denial of Service (DoS) or unexpected system behavior.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2459625, 2459626
Bug Blocks:

Description OSIDB Bzimport 2026-04-17 21:01:22 UTC

xrdp is an open source RDP server. Versions through 0.10.5 contain a heap-based buffer overflow vulnerability in its logon processing. In environments where domain_user_separator is configured in xrdp.ini, an unauthenticated remote attacker can send a crafted, excessively long username and domain name to overflow the internal buffer. This can corrupt adjacent memory regions, potentially leading to a Denial of Service (DoS) or unexpected behavior. The domain_name_separator directive is commented out by default, systems are not affected by this vulnerability unless it is intentionally configured. This issue has been fixed in version 0.10.6.

Comment 3 Zephyr Lykos 2026-06-14 09:56:25 UTC

should be fixed in 13a9c73444715deb923c2d16705971f60823db28