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CVE-2026-55639

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the parsing of Client Security Data within the Client MCS Connect Initial PDU with GCC Conference Create Request during the connection sequence. During the initial capability and security negotiation phase, the parser fails to perform sufficient length validation for the incoming data block. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted RDP packe
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0f39d4e76e345da854abbf1ca3cb18787826b02895ec6e07eabdb7bc13067102
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"xrdp","vendor":"neutrinolabs","versions":[{"status":"affected","version":"< 0.10.6.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3843a4b725054a862c9fcae5149beb6a2a4ffc7efab51e1f857eb5a1466ffc83 · sha256:6a8c5c0b005f8167… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3843a4b725054a862c9fcae5149beb6a2a4ffc7efab51e1f857eb5a1466ffc83 · sha256:6a8c5c0b005f8167… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3843a4b725054a862c9fcae5149beb6a2a4ffc7efab51e1f857eb5a1466ffc83 · sha256:6a8c5c0b005f8167… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1","tags":["x_refsource_MISC"],"url":"https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3843a4b725054a862c9fcae5149beb6a2a4ffc7efab51e1f857eb5a1466ffc83 · sha256:6a8c5c0b005f8167… · /containers/cna/references/1
{"name":"https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-6g36-mxcf-r3gc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-6g36-mxcf-r3gc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3843a4b725054a862c9fcae5149beb6a2a4ffc7efab51e1f857eb5a1466ffc83 · sha256:6a8c5c0b005f8167… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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