CVE-2026-32623Network attack vector

Remote code execution via channel reassembly overflow

Published Apr 17, 2026 · Updated Apr 17, 2026

Heap-based buffer overflow in xrdp's NeutrinoRDP module through 0.10.5 allows remote attackers to execute code or crash the service. Fragmented virtual-channel data is reassembled without checking its total size against the allocated heap buffer, allowing an overwrite. The module must be explicitly compiled and enabled, and exploitation requires a malicious downstream RDP server or a man-in-the-middle attacker.

CVSS severity7.7
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in xrdp's NeutrinoRDP module through 0.10.5 allows remote attackers to execute code or crash the service. Fragmented virtual-channel data is reassembled without checking its total size against the allocated heap buffer, allowing an overwrite. The module must be explicitly compiled and enabled, and exploitation requires a malicious downstream RDP server or a man-in-the-middle attacker.

The record

CVE
CVE-2026-32623
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
neutrinolabs
Product
xrdp
Classifications
CWE-122, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.10.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

neutrinolabs · xrdpversion=< 0.10.6

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
7.7GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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