CVE-2022-23483Network attack vector

Memory disclosure via unchecked channel data length

Published Dec 9, 2022 · Updated Apr 23, 2025

Out-of-bounds read in libxrdp_send_to_channel in xrdp before 0.9.21 allows remote attackers to disclose process memory via RDP. xrdp_mm_trans_process_channel_data trusted an application-supplied channel size and passed its stream pointer to libxrdp_send_to_channel without verifying that the declared bytes remained. An unauthenticated RDP connection can supply an invalid channel length, exposing adjacent process memory; no memory write or code execution is reported.

CVSS severity7.5
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in libxrdp_send_to_channel in xrdp before 0.9.21 allows remote attackers to disclose process memory via RDP. xrdp_mm_trans_process_channel_data trusted an application-supplied channel size and passed its stream pointer to libxrdp_send_to_channel without verifying that the declared bytes remained. An unauthenticated RDP connection can supply an invalid channel length, exposing adjacent process memory; no memory write or code execution is reported.

The record

CVE
CVE-2022-23483
Published
Dec 9, 2022
Updated
Apr 23, 2025
Vendor
neutrinolabs
Product
xrdp
Classifications
CWE-125, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=< 0.9.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

neutrinolabs · xrdpversion=< 0.9.21

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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-125Out-of-bounds Read
T1190Exploit Public-Facing Application

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

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Your stack

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