CVE-2026-32624— xrdp: Heap buffer overflow in xrdp_sec_process_logon_info() via incorrect g_strncat length calculation
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Release xrdp v0.10.6 · neutrinolabs/xrdp · GitHubx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-32624
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
- CVE-2026-35512
xrdp: Heap buffer overflow in EGFX channel - CVE-2026-33689
xrdp: Pre-authentication out-of-bounds reads in channel pars - CVE-2026-33145
xrdp: Authenticated RCE via unsanitized AlternateShell execu - CVE-2026-33516
xrdp: Pre-authentication out-of-bounds reads in RDP capabili - CVE-2026-32623
xrdp: Heap buffer overflow in NeutrinoRDP channel reassembly
Same vendor: neutrinolabs
- CVE-2026-35512
xrdp: Heap buffer overflow in EGFX channel - CVE-2026-33689
xrdp: Pre-authentication out-of-bounds reads in channel pars - CVE-2026-33145
xrdp: Authenticated RCE via unsanitized AlternateShell execu - CVE-2026-33516
xrdp: Pre-authentication out-of-bounds reads in RDP capabili - CVE-2026-32623
xrdp: Heap buffer overflow in NeutrinoRDP channel reassembly
Same weakness: CWE-122
- CVE-2026-8261
Squirrel sqobject.cpp Load heap-based overflow - CVE-2026-8213
OSGeo gdal Grid File GDapi.c GDSDfldsrch heap-based overflow - CVE-2026-8212
OSGeo gdal SWapi.c SWSDfldsrch heap-based overflow - CVE-2026-42309
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Vim: Heap Buffer Overflow in spell file loading
V. Comments for CVE-2026-32624
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