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Fencer Vulns
critical 9.1

CVE-2025-68670 json

xrdp improperly checks bounds of domain string length, which leads to Stack-based Buffer Overflow

published 2026-01-27 9 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-206388

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

xrdp is an open source RDP server. xrdp before v0.10.5 contains an unauthenticated stack-based buffer overflow vulnerability. The issue stems from improper bounds checking when processing user domain information during the connection sequence. If exploited, the vulnerability could allow remote attackers to execute arbitrary code on the target system. The vulnerability allows an attacker to overwrite the stack buffer and the return address, which could theoretically be used to redirect the execution flow. The impact of this vulnerability is lessened if a compiler flag has been used to build the xrdp executable with stack canary protection. If this is the case, a second vulnerability would need to be used to leak the stack canary value. Upgrade to version 0.10.5 to receive a patch. Additionally, do not rely on stack canary protection on production systems.

Patch / fix

  • neutrinolabs xrdp 0.10.5
  • xrdp Debian 12 0.9.21.1-1+deb12u2
  • xrdp Debian 13 0.10.1-3.1+deb13u1
  • xrdp Debian 14 0.10.1-4.1

debian advisories DEBIAN-CVE-2025-68670

  • xrdp Ubuntu 25.10 0.10.1-3.1+deb13u1build0.25.10.1
  • xrdp Ubuntu Pro 18.04 LTS 0.9.5-2ubuntu0.1~esm3
  • xrdp Ubuntu Pro 20.04 LTS 0.9.12-1ubuntu0.1+esm2
  • xrdp Ubuntu Pro 22.04 LTS 0.9.17-2ubuntu3+esm2
  • xrdp Ubuntu Pro 24.04 LTS 0.9.24-4ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2025-68670

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • xrdp SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 0.9.13.1-150200.4.36.1
  • xrdp SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Basesystem 15 SP7 +1 more 0.9.13.1-150600.15.6.1
  • xrdp SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 0.9.10-3.22.1

suse advisories SUSE-SU-2026:0477-1SUSE-SU-2026:0433-1SUSE-SU-2026:0404-1

  • xrdp openSUSE Tumbleweed 0.9.27-1.1
  • xrdp openSUSE Leap 16.0 0.9.26-bp160.2.1

opensuse advisories openSUSE-SU-2026:10146-1openSUSE-SU-2026:20167-1

  • xrdp Alpine 3.24, Alpine 3.23 0.10.5-r0

alpine advisories ALPINE-CVE-2025-68670

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-68670 updated cvss 9.1

xrdp: xrdp: Remote code execution via unauthenticated stack-based buffer overflow

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
9 mo ago

Exploit prediction

1.37% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • neutrinolabs xrdp

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.