CVE-2026-55645

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 80% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 22, 2026

Advisory Details (2)

Auto-updated Jul 20, 2026
Patch available. Sources: github_release, github.
github Patch Available

Out-of-Bounds Read in xrdp Client Control PDU Processing · Advisory · neutrinolabs/xrdp · GitHub

https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-3m4m-h22g-c7xx
github_release Patch Available

xrdp v0.10.6.1

Patch available: neutrinolabs/xrdp v0.10.6.1

https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
xrdp0.10.0-1 ... 0.9.24-5~bpo12+1 (43 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
xrdp0.10.0-1 ... 0.9.24-5~bpo12+1 (36 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
xrdp0.10.1-3.1 ... 0.10.6.1-2 (20 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
xrdp0.10.1-3.1 ... 0.10.6.1-1 (18 versions)0.10.6.1-2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 51× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 02:33 UTCEG score recompute
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-27 14:25 UTCEPSS rescore
  5. 2026-08-27 12:16 UTCEG score recompute
  6. 2026-08-26 14:46 UTCEPSS rescore
  7. 2026-08-25 14:31 UTCEG score recompute
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-24 15:52 UTCEG score recompute
  10. 2026-08-23 17:16 UTCEG score recompute
  11. 2026-08-23 00:19 UTCEPSS rescore
  12. 2026-08-22 18:42 UTCEG score recompute
  13. 2026-08-21 23:49 UTCEPSS rescore
  14. 2026-08-21 20:07 UTCEG score recompute
  15. 2026-08-20 22:55 UTCEPSS rescore
  16. 2026-08-19 22:59 UTCEG score recompute
  17. 2026-08-19 17:04 UTCEPSS rescore
  18. 2026-08-19 00:25 UTCEG score recompute
  19. 2026-08-18 13:48 UTCEPSS rescore
  20. 2026-08-18 01:48 UTCEG score recompute
  21. 2026-08-17 13:47 UTCEPSS rescore
  22. 2026-08-17 02:32 UTCEG score recompute
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 03:58 UTCEG score recompute
  25. 2026-08-16 02:14 UTCEPSS rescore
Show 46 more
  1. 2026-08-15 05:24 UTCEG score recompute
  2. 2026-08-15 01:30 UTCEPSS rescore
  3. 2026-08-14 06:49 UTCEG score recompute
  4. 2026-08-13 22:00 UTCEPSS rescore
  5. 2026-08-13 08:15 UTCEG score recompute
  6. 2026-08-12 13:51 UTCEPSS rescore
  7. 2026-08-12 09:41 UTCEG score recompute
  8. 2026-08-11 11:06 UTCEG score recompute
  9. 2026-08-11 00:00 UTCEPSS rescore
  10. 2026-08-09 13:58 UTCEG score recompute
  11. 2026-08-09 13:46 UTCEPSS rescore
  12. 2026-08-08 16:37 UTCEPSS rescore
  13. 2026-08-07 16:49 UTCEG score recompute
  14. 2026-08-06 18:15 UTCEG score recompute
  15. 2026-08-06 13:47 UTCEPSS rescore
  16. 2026-08-05 19:40 UTCEG score recompute
  17. 2026-08-05 19:17 UTCEPSS rescore
  18. 2026-08-04 21:06 UTCEG score recompute
  19. 2026-08-04 15:10 UTCEPSS rescore
  20. 2026-08-04 10:39 UTCEPSS rescore
  21. 2026-08-03 22:03 UTCEG score recompute
  22. 2026-08-03 10:36 UTCEPSS rescore
  23. 2026-08-02 23:28 UTCEG score recompute
  24. 2026-08-02 02:27 UTCEPSS rescore
  25. 2026-08-02 00:54 UTCEG score recompute
  26. 2026-08-01 04:16 UTCEPSS rescore
  27. 2026-07-31 03:42 UTCEG score recompute
  28. 2026-07-30 16:28 UTCEPSS rescore
  29. 2026-07-30 05:08 UTCEG score recompute
  30. 2026-07-30 01:30 UTCEPSS rescore
  31. 2026-07-29 06:34 UTCEG score recompute
  32. 2026-07-28 15:37 UTCEPSS rescore
  33. 2026-07-28 07:56 UTCEG score recompute
  34. 2026-07-27 09:22 UTCEG score recompute
  35. 2026-07-26 14:54 UTCEPSS rescore
  36. 2026-07-26 10:47 UTCEG score recompute
  37. 2026-07-25 14:18 UTCEPSS rescore
  38. 2026-07-24 14:18 UTCEPSS rescore
  39. 2026-07-23 14:18 UTCEPSS rescore
  40. 2026-07-23 03:20 UTCEG score recompute
  41. 2026-07-22 23:34 UTCEG score recompute
  42. 2026-07-22 14:08 UTCEPSS rescore
  43. 2026-07-21 15:25 UTCEPSS rescore
  44. 2026-07-20 18:42 UTCEG score recompute
  45. 2026-07-20 17:11 UTCEG score recompute
  46. 2026-07-20 17:09 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-55645?
CVE-2026-55645 is a medium vulnerability published on July 20, 2026. xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote,…
When was CVE-2026-55645 disclosed?
CVE-2026-55645 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55645 actively exploited?
CVE-2026-55645 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.6% of all scored CVEs.
What is the CVSS score of CVE-2026-55645?
CVE-2026-55645 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-55645?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55645, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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