{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-55639 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-55639 is a medium-severity vulnerability in neutrinolabs xrdp, published on 20 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55639 and fix it if it is affected.\n\nWhat it is: CVE-2026-55639 is a medium-severity vulnerability in neutrinolabs xrdp, published on 20 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-55639 in the wild and no public exploit code.\n\nAffected product: neutrinolabs xrdp. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55639/ (Markdown: https://insights.sbomify.com/CVE-2026-55639/index.md)","id":"CVE-2026-55639","markdown":"https://insights.sbomify.com/CVE-2026-55639/index.md","name":"CVE-2026-55639","record":{"aliases":["DEBIAN-CVE-2026-55639","GHSA-6g36-mxcf-r3gc","UBUNTU-CVE-2026-55639"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"RDP server","requires_auth":"none","summary":"A remote unauthenticated attacker can read process memory via an out-of-bounds read in xrdp's security negotiation parsing.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"xrdp","vendor":"neutrinolabs"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"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 packet containing malformed data. Due to missing bounds checks, the xrdp process may read a small number of bytes beyond the declared data block boundary, potentially disclosing process memory contents that could be combined with other vulnerabilities. This issue has been fixed in version 0.10.6.1.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Information disclosure in xrdp","id":"CVE-2026-55639","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"nextcloud-mcp-server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )","id":"CVE-2026-55640"},"packages":[],"prev":{"headline":"9router: Unauthenticated LLM proxy access via /codex rewrite authorization bypass","id":"CVE-2026-55638"},"products":["xrdp"],"published":"2026-07-20","related":[{"cvss_score":9.8,"headline":"xrdp: lib_palette_update Heap Buffer Overflow \u0026 RCE","id":"CVE-2026-41252","kev_date_added":null,"published":"2026-07-20"},{"cvss_score":9.3,"headline":"xrdp: RDP MAC signature (dataSignature) never verified on receive — integrity bypass in non-TLS mode","id":"CVE-2026-32105","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.8,"headline":"xrdp: Channel Data Forwarding Fixed-Size Buffer Overflow","id":"CVE-2026-44178","kev_date_added":null,"published":"2026-07-20"},{"cvss_score":8.8,"headline":"xrdp: Fail-open privilege drop in sesexec — child processes may execute as root if setuid fails","id":"CVE-2026-32107","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.7,"headline":"xrdp: Pre-authentication out-of-bounds reads in channel parsers","id":"CVE-2026-33689","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.7,"headline":"xrdp: Heap buffer overflow in EGFX channel","id":"CVE-2026-35512","kev_date_added":null,"published":"2026-04-17"},{"cvss_score":8.2,"headline":"xrdp: lib_framebuffer_update Has Integer Overflow Heap Info Leak \u0026 ASLR Bypass","id":"CVE-2026-41521","kev_date_added":null,"published":"2026-07-20"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-20","vendors":["neutrinolabs"]},"summary":"A remote unauthenticated attacker can read process memory via an out-of-bounds read in xrdp's security negotiation parsing.","url":"https://insights.sbomify.com/CVE-2026-55639/"}