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CVE-2026-32624— xrdp: Heap buffer overflow in xrdp_sec_process_logon_info() via incorrect g_strncat length calculation

Quick assessment

Affected
neutrinolabs xrdp
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

xrdp是neutrinolabs开源的一款开源远程桌面协议服务器。 xrdp 0.10.5及之前版本存在安全漏洞，该漏洞源于登录处理中存在基于堆的缓冲区溢出，可能导致内存区域损坏、拒绝服务或意外行为。

AI Predicted 8.1 Difficulty: Easy EPSS 0.50% · P41

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-32624

Vulnerability Information
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Vulnerability Title
xrdp: Heap buffer overflow in xrdp_sec_process_logon_info() via incorrect g_strncat length calculation
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
xrdp 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
xrdp是neutrinolabs开源的一款开源远程桌面协议服务器。 xrdp 0.10.5及之前版本存在安全漏洞，该漏洞源于登录处理中存在基于堆的缓冲区溢出，可能导致内存区域损坏、拒绝服务或意外行为。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
neutrinolabs xrdp < 0.10.6 -

II. Public POCs for CVE-2026-32624

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III. Intelligence Information for CVE-2026-32624

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Vendor Pages for CVE-2026-32624 (1)

Same Patch Batch · neutrinolabs · 2026-04-17 · 8 CVEs total

CVE-2026-32107 8.8 HIGH xrdp: Fail-open privilege drop in sesexec — child processes may execute as root if setuid
CVE-2026-33145 6.3 MEDIUM xrdp: Authenticated RCE via unsanitized AlternateShell execution in xrdp-sesman
CVE-2026-35512 xrdp: Heap buffer overflow in EGFX channel
CVE-2026-32105 xrdp: RDP MAC signature (dataSignature) never verified on receive — integrity bypass in no
CVE-2026-32623 xrdp: Heap buffer overflow in NeutrinoRDP channel reassembly
CVE-2026-33689 xrdp: Pre-authentication out-of-bounds reads in channel parsers
CVE-2026-33516 xrdp: Pre-authentication out-of-bounds reads in RDP capability and channel parsers

IV. Related Vulnerabilities

Same product: xrdp
Same vendor: neutrinolabs
Same weakness: CWE-122

V. Comments for CVE-2026-32624

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