CVE-2026-55626: xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process
xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process is launched with insufficient authentication mechanisms. A local authenticated attacker could exploit this vulnerability to bypass intended session isolation, allowing them to unauthorizedly view or control the active desktop sessions of other users on the same system. Users using other backends, such as xorgxrdp or Xvnc over TCP sockets, are not affected. This issue has been fixed in version 0.10.6.1.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-55626
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-556260.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-55626 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for xrdp is an
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-55639: xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concernin…nvd · 2026-07-20
- mediumCVE-2026-55645: xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concernin…nvd · 2026-07-20
- mediumCVE-2026-55238: xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concernin…nvd · 2026-07-20
- highCVE-2026-54538: xrdp is an open source RDP server. In versions 0.10.6 and prior, a n issue was discovered wher…nvd · 2026-07-20
- mediumCVE-2026-44978: xrdp is an open source RDP server. Versions 0.10.6 and prior contain a heap out-of-bounds read…nvd · 2026-07-20
- highCVE-2026-44178: xrdp is an open source RDP server. Versions 0.10.6 and prior contain a heap-based buffer overf…nvd · 2026-07-20
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