Unauthenticated service disruption via logon buffer overflow
Published Apr 17, 2026 · Updated Apr 17, 2026
Heap-based buffer overflow in xrdp before 0.10.6 allows remote attackers to corrupt memory through crafted RDP logon names. xrdp_sec_process_logon_info supplies an incorrect remaining-length bound to g_strncat while appending the configured separator and client domain to the username buffer. Exploitation requires domain_user_separator to be enabled in xrdp.ini; it is commented out by default, and reported effects are limited to adjacent-memory corruption, service interruption, or unexpected behavior.
Summary
What happened
Heap-based buffer overflow in xrdp before 0.10.6 allows remote attackers to corrupt memory through crafted RDP logon names. xrdp_sec_process_logon_info supplies an incorrect remaining-length bound to g_strncat while appending the configured separator and client domain to the username buffer. Exploitation requires domain_user_separator to be enabled in xrdp.ini; it is commented out by default, and reported effects are limited to adjacent-memory corruption, service interruption, or unexpected behavior.
The record
- CVE
- CVE-2026-32624
- Published
- Apr 17, 2026
- Updated
- Apr 17, 2026
- Vendor
- neutrinolabs
- Product
- xrdp
- Classifications
- CWE-122, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 17, 2026CVE publishedPublication date reported by the CVE source.
- Apr 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.10.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo