{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55193 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-55193 is a high-severity memory corruption vulnerability in Freerdp Freerdp, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-55193 and fix it if it is affected.\n\nWhat it is: CVE-2026-55193 is a high-severity memory corruption vulnerability in Freerdp Freerdp, published on 19 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55193 exists.\n\nAffected product: Freerdp Freerdp. 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-2026-55193/ (Markdown: https://insights.sbomify.com/CVE-2026-55193/index.md)","id":"CVE-2026-55193","markdown":"https://insights.sbomify.com/CVE-2026-55193/index.md","name":"CVE-2026-55193","record":{"aliases":["ALSA-2026:66347","ALSA-2026:66349","ALSA-2026:69387","CLSA-2026-1792767913","CLSA-2026-1792768177","DEBIAN-CVE-2026-55193","GHSA-7rp4-66mc-j9vx","OESA-2026-4367","OESA-2026-4368","OESA-2026-4369","OESA-2026-4370","RHSA-2026:66347","RHSA-2026:66349","RHSA-2026:69387","RHSA-2026:72479","RHSA-2026:72481","RHSA-2026:73026","RHSA-2026:73027","RHSA-2026:73068","RHSA-2026:74470","RHSA-2026:74610","RLSA-2026:66347","RLSA-2026:66349","RLSA-2026:69387","UBUNTU-CVE-2026-55193"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"FreeRDP client library","requires_auth":"none","summary":"A heap-buffer-overflow in FreeRDP allows a malicious gateway to crash the client or execute code via crafted RPC fragments.","user_interaction":"required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"freerdp","vendor":"freerdp"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte ReceiveFragment allocation. A malicious gateway can advertise 65535 and then send a response fragment of the same length, causing rpc_channel_read in libfreerdp/core/gateway/rpc.c to write up to 65535 bytes into the smaller ReceiveFragment buffer. This can crash the client and may permit code execution through attacker-controlled heap corruption. This issue is fixed in version 3.27.0.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::crb","Red Hat:rhel_aus:8.4::appstream","Red Hat:rhel_aus:8.6::appstream","Red Hat:rhel_e4s:8.8::appstream","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_e4s:9.4::appstream","Red Hat:rhel_els:7","Red Hat:rhel_eus:9.6::appstream","Red Hat:rhel_eus:9.6::crb","Red Hat:rhel_eus_long_life:8.4::appstream","Red Hat:rhel_eus_long_life:8.6::appstream","Red Hat:rhel_tus:8.8::appstream","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"FreeRDP: Heap-buffer-overflow write in TS Gateway RPC fragment receive due to uncapped bind_ack max_xmit_frag","id":"CVE-2026-55193","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"freerdp:freerdp","products":["freerdp:freerdp"],"type":"memory_corruption","year":"2026"},"n_packages":137,"n_references":4,"next":{"headline":"FreeRDPHeap-buffer-overflow write in TS Gateway RPC RESPONSE reassembly due to alloc_hint capacity mismatch","id":"CVE-2026-55194"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp","purl":"pkg:rpm/almalinux/freerdp","source":"ALSA-2026:66349"},{"ecosystem":"AlmaLinux:10","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-devel","purl":"pkg:rpm/almalinux/freerdp-devel","source":"ALSA-2026:66349"},{"ecosystem":"AlmaLinux:10","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs","purl":"pkg:rpm/almalinux/freerdp-libs","source":"ALSA-2026:66349"},{"ecosystem":"AlmaLinux:10","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-server","purl":"pkg:rpm/almalinux/freerdp-server","source":"ALSA-2026:66349"},{"ecosystem":"AlmaLinux:10","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"libwinpr","purl":"pkg:rpm/almalinux/libwinpr","source":"ALSA-2026:66349"},{"ecosystem":"AlmaLinux:10","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"libwinpr-devel","purl":"pkg:rpm/almalinux/libwinpr-devel","source":"ALSA-2026:66349"},{"ecosystem":"AlmaLinux:8","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp","purl":"pkg:rpm/almalinux/freerdp","source":"ALSA-2026:69387"},{"ecosystem":"AlmaLinux:8","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-devel","purl":"pkg:rpm/almalinux/freerdp-devel","source":"ALSA-2026:69387"},{"ecosystem":"AlmaLinux:8","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs","purl":"pkg:rpm/almalinux/freerdp-libs","source":"ALSA-2026:69387"},{"ecosystem":"AlmaLinux:8","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"libwinpr","purl":"pkg:rpm/almalinux/libwinpr","source":"ALSA-2026:69387"},{"ecosystem":"AlmaLinux:8","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"libwinpr-devel","purl":"pkg:rpm/almalinux/libwinpr-devel","source":"ALSA-2026:69387"},{"ecosystem":"AlmaLinux:9","fixed":["2:2.11.7-7.el9_8.7"],"introduced":["0"],"last_affected":[],"package":"freerdp","purl":"pkg:rpm/almalinux/freerdp","source":"ALSA-2026:66347"},{"ecosystem":"AlmaLinux:9","fixed":["2:2.11.7-7.el9_8.7"],"introduced":["0"],"last_affected":[],"package":"freerdp-devel","purl":"pkg:rpm/almalinux/freerdp-devel","source":"ALSA-2026:66347"},{"ecosystem":"AlmaLinux:9","fixed":["2:2.11.7-7.el9_8.7"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs","purl":"pkg:rpm/almalinux/freerdp-libs","source":"ALSA-2026:66347"},{"ecosystem":"AlmaLinux:9","fixed":["2:2.11.7-7.el9_8.7"],"introduced":["0"],"last_affected":[],"package":"libwinpr","purl":"pkg:rpm/almalinux/libwinpr","source":"ALSA-2026:66347"},{"ecosystem":"AlmaLinux:9","fixed":["2:2.11.7-7.el9_8.7"],"introduced":["0"],"last_affected":[],"package":"libwinpr-devel","purl":"pkg:rpm/almalinux/libwinpr-devel","source":"ALSA-2026:66347"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp","purl":"pkg:rpm/redhat/freerdp","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-debuginfo","purl":"pkg:rpm/redhat/freerdp-debuginfo","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-debugsource","purl":"pkg:rpm/redhat/freerdp-debugsource","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-devel","purl":"pkg:rpm/redhat/freerdp-devel","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs","purl":"pkg:rpm/redhat/freerdp-libs","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs-debuginfo","purl":"pkg:rpm/redhat/freerdp-libs-debuginfo","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-server","purl":"pkg:rpm/redhat/freerdp-server","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"freerdp-server-debuginfo","purl":"pkg:rpm/redhat/freerdp-server-debuginfo","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"libwinpr","purl":"pkg:rpm/redhat/libwinpr","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"libwinpr-debuginfo","purl":"pkg:rpm/redhat/libwinpr-debuginfo","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["2:3.10.3-12.el10_2.11"],"introduced":["0"],"last_affected":[],"package":"libwinpr-devel","purl":"pkg:rpm/redhat/libwinpr-devel","source":"RHSA-2026:66349"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp","purl":"pkg:rpm/redhat/freerdp","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-debuginfo","purl":"pkg:rpm/redhat/freerdp-debuginfo","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-debugsource","purl":"pkg:rpm/redhat/freerdp-debugsource","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs","purl":"pkg:rpm/redhat/freerdp-libs","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs-debuginfo","purl":"pkg:rpm/redhat/freerdp-libs-debuginfo","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"libwinpr","purl":"pkg:rpm/redhat/libwinpr","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"libwinpr-debuginfo","purl":"pkg:rpm/redhat/libwinpr-debuginfo","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"libwinpr-devel","purl":"pkg:rpm/redhat/libwinpr-devel","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-debuginfo","purl":"pkg:rpm/redhat/freerdp-debuginfo","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-debugsource","purl":"pkg:rpm/redhat/freerdp-debugsource","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-devel","purl":"pkg:rpm/redhat/freerdp-devel","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"freerdp-libs-debuginfo","purl":"pkg:rpm/redhat/freerdp-libs-debuginfo","source":"RHSA-2026:69387"},{"ecosystem":"Red Hat:enterprise_linux:8::crb","fixed":["2:2.11.7-13.el8_10"],"introduced":["0"],"last_affected":[],"package":"libwinpr-debuginfo","purl":"pkg:rpm/redhat/libwinpr-debuginfo","source":"RHSA-2026:69387"}],"prev":{"headline":"FreeRDP: Out-of-bounds read in H.264 YUV-to-RGB conversion due to decoder/surface dimension mismatch","id":"CVE-2026-55192"},"products":["FreeRDP"],"published":"2026-08-19","related":[{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2021-37594","kev_date_added":null,"published":"2021-07-27"},{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-2021-37595","kev_date_added":null,"published":"2021-07-27"},{"cvss_score":9.4,"headline":"FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr","id":"CVE-2026-67305","kev_date_added":null,"published":"2026-08-01"},{"cvss_score":9.3,"headline":"FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass","id":"CVE-2026-66402","kev_date_added":null,"published":"2026-08-01"},{"cvss_score":9.3,"headline":"FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection","id":"CVE-2026-67289","kev_date_added":null,"published":"2026-08-01"},{"cvss_score":9.3,"headline":"FreeRDP before 3.29.0 WebSocket Ping Buffer Over-disclosure","id":"CVE-2026-67292","kev_date_added":null,"published":"2026-08-01"},{"cvss_score":9.3,"headline":"FreeRDP before 3.29.0 Improper Certificate Hostname Validation","id":"CVE-2026-67293","kev_date_added":null,"published":"2026-08-01"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-27","vendors":["FreeRDP"]},"summary":"A heap-buffer-overflow in FreeRDP allows a malicious gateway to crash the client or execute code via crafted RPC fragments.","url":"https://insights.sbomify.com/CVE-2026-55193/"}