{"id":"CVE-2026-109256","summary":"FreeRDP 3.10.0 through 3.32.2 Heap Buffer Overflow in WinPR PNG Conversion","details":"FreeRDP 3.10.0 through 3.32.2 contains a heap buffer overflow in the WinPR png_write_data callback that writes past the buffer after a realloc failure. A malicious RDP clipboard peer can supply a large CF_DIB image that triggers out-of-bounds memcpy during PNG conversion, causing a client crash.","aliases":["GHSA-wf3x-658c-52m5"],"modified":"2026-10-17T02:48:03.293777019Z","published":"2026-10-12T16:04:27.495Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109256.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-122"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109256.json"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-wf3x-658c-52m5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109256"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/freerdp-3.10.0-through-3.32.2-heap-buffer-overflow-in-winpr-png-conversion"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"6e662fdb35f9aefb319fa90a5f0f34b83941774f"},{"fixed":"97eff6ddfbbfaa8e42a126d362686bd001ff8bdc"}],"database_specific":{"extracted_events":[{"introduced":"3.10.0"},{"last_affected":"3.32.2"},{"fixed":"3.32.2"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109256.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}