{"id":"CVE-2026-114042","kind":"vulnerability","aliases":["CVE-2026-114042"],"related":[],"title":"FreeRDP: malicious RDP server can crash client via use-after-free","description":"FreeRDP 3.32.0 contains a use-after-free vulnerability in the drdynvc channel that frees a pool-owned stream with the owned-stream deallocator when totalLength is smaller than the chunk size. A malicious RDP server can send a single well-formed Virtual Channel PDU to trigger the free and crash the client during teardown.","summary":"FreeRDP 3.32.0 frees a pool-owned stream in the drdynvc channel when totalLength is smaller than the chunk size, causing a use-after-free. A malicious RDP server can send one crafted Virtual Channel PDU to crash the client during teardown.","severity":"high","cvss":7.1,"epss":0.00254,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["freerdp","linux","package","rdp-clients","windows"],"not_affected_if":["no-untrusted-rdp-servers"],"how_to_check":"- Check the installed FreeRDP version with `xfreerdp --version` or the package manager, and look for `3.32.0`.\n- unknown","fix":"- Upgrade FreeRDP past `3.32.0` once a fixed release is published; the sources do not name a fixed version.\n- unknown","status":"open","published_at":"2026-10-21T01:17:26+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","triaged_at":"2026-10-25T03:34:05+00:00","updated_at":"2026-10-25T03:34:05+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-10-25T03:34:05Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade FreeRDP past `3.32.0` once a fixed release is published; the sources do not name a fixed version.\n- unknown","reach":"network","title":"FreeRDP: malicious RDP server can crash client via use-after-free","impact":"low","summary":"FreeRDP 3.32.0 frees a pool-owned stream in the drdynvc channel when totalLength is smaller than the chunk size, causing a use-after-free. A malicious RDP server can send one crafted Virtual Channel PDU to crash the client during teardown.","category":"package","nicknames":[],"who_cares":["freerdp","rdp-clients","linux","windows"],"confidence":0.5,"needs_auth":"no","worst_case":"Client crashes during teardown; memory corruption beyond that is unknown","analyst_note":"Check the NVD entry and FreeRDP's project advisory for the fixed version and whether code execution is possible beyond a crash.","how_to_check":"- Check the installed FreeRDP version with `xfreerdp --version` or the package manager, and look for `3.32.0`.\n- unknown","needs_analyst":true,"not_affected_if":["no-untrusted-rdp-servers"],"who_is_affected":"Teams that run or ship FreeRDP 3.32.0 clients that connect to RDP servers they do not fully trust. The sources describe the trigger as a malicious server sending a Virtual Channel PDU, so the client side is exposed. unknown for whether the flaw leads beyond a client crash.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000619,"input_tokens":3382,"output_tokens":561,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-114042':15A,18A '-2026':14A,17A '3.32.0':27B,70C 'caus':46B 'channel':37B,61B,81C,115C 'chunk':44B,101C 'client':7A,24B,66B,124C 'contain':71C 'craft':59B 'crash':6A,64B,122C 'cve':13A,16A 'dealloc':94C 'drdynvc':36B,80C 'form':113C 'free':12A,28B,51B,76C,83C,120C 'freerdp':1A,19B,26B,69C 'linux':20B 'malici':2A,53B,104C 'one':58B 'own':32B,87C,92C 'owned-stream':91C 'packag':21B 'pdu':62B,116C 'pool':31B,86C 'pool-own':30B,85C 'rdp':3A,23B,54B,105C 'rdp-client':22B 'send':57B,108C 'server':4A,55B,106C 'singl':110C 'size':45B,102C 'smaller':41B,98C 'stream':33B,88C,93C 'teardown':68B,126C 'totallength':39B,96C 'trigger':118C 'use':10A,49B,74C 'use-after-fre':9A,48B,73C 'via':8A 'virtual':60B,114C 'vulner':77C 'well':112C 'well-form':111C 'window':25B","nicknames":[],"mitigations":[],"who_affected":"Teams that run or ship FreeRDP 3.32.0 clients that connect to RDP servers they do not fully trust. The sources describe the trigger as a malicious server sending a Virtual Channel PDU, so the client side is exposed. unknown for whether the flaw leads beyond a client crash.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-21T01:17:26+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-114042","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114042","severity":null,"published_at":"2026-10-21T01:17:26+00:00","modified_at":"2026-10-22T19:17:36+00:00","first_seen_at":"2026-10-23T21:57:27+00:00","fetched_at":"2026-10-23T22:29:01+00:00","note":null},{"source":"epss","external_id":"CVE-2026-114042","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-114042","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T13:15:55+00:00","fetched_at":"2026-10-24T13:15:55+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}