CVE-2026-32624: xrdp: Heap buffer overflow in xrdp_sec_process_logon_info() via incorrect g_strncat length calculation
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 domainuserseparator 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 domainnameseparator 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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2026-32624?
CVE-2026-32624 is classified as a high severity vulnerability due to the potential for exploitation via a heap-based buffer overflow.
How do I fix CVE-2026-32624?
To fix CVE-2026-32624, upgrade xrdp to version 0.10.6 or later where the vulnerability has been patched.
What systems are affected by CVE-2026-32624?
CVE-2026-32624 affects xrdp versions up to and including 0.10.5, particularly in environments using the domain_user_separator configuration.
What could an attacker gain by exploiting CVE-2026-32624?
An attacker could potentially execute arbitrary code or cause a denial-of-service condition by exploiting CVE-2026-32624.
What is xrdp and why is CVE-2026-32624 significant?
xrdp is an open source RDP (Remote Desktop Protocol) server, and CVE-2026-32624 is significant as it poses a risk to user session security during logon processing.