CVE-2026-33689
published 2026-04-17CVE-2026-33689: xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A…
PriorityP355critical9.1CVSS 3.1
AVNACLPRNUINSUCHINAH
EPSS
0.48%
38.1th percentile
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| neutrinolabs | xrdp | < 0.10.6 | 0.10.6 |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
nvdv4.08.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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Bugzilla
CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read [epel-all]
bugzilla·2026-04-20·CVSS 8.7
CVE-2026-33689 [HIGH] CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read [epel-all]
CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
FEDORA-EPEL-2026-239e52fdeb (xrdp-0.10.6-1.el8) has been submitted as an update to Fedora EPEL 8.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-239e52fdeb
---
FEDORA-EPEL-2026-ff046d13ab (xrdp-0.10.6-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-ff046d13ab
Bugzilla
CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read [fedora-all]
bugzilla·2026-04-20·CVSS 8.7
CVE-2026-33689 [HIGH] CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read [fedora-all]
CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
FEDORA-EPEL-2026-ff046d13ab (xrdp-0.10.6-1.el9) has been submitted as an update to Fedora EPEL 9.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-ff046d13ab
---
FEDORA-2026-9417ff0bc5 (xrdp-0.10.6-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-9417ff0bc5
---
FEDORA-2026-ad9e109ad8 (xrdp-0.10.6-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/
Bugzilla
CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read
bugzilla·2026-04-17·CVSS 8.7
CVE-2026-33689 [HIGH] CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read
CVE-2026-33689 xrdp: xrdp: Denial of Service and Information Disclosure via Out-of-Bounds Read
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
2026-04-17
Published