CVE-2026-109241

FreeRDP before 3.32.0 contains a NULL pointer dereference vulnerability in the client video redirection channel that allows malicious servers to crash clients by sending out-of-order messages. Attackers can send a Geometry CLEAR message that nulls presentation-geometry, then send VideoData that...

CVE-2026-109252: NULL Pointer Dereference

FreeRDP from 3.9.0 before 3.32.0 contains a NULL pointer dereference vulnerability in the RDPEAR NDR reader that allows malicious servers to crash clients via truncated KERBRPCINTERNALNAME data. Attackers can send a CreateApReqAuthenticatorReq with NameCount of two or more ending before the Names...

PT-2026-110673

Name of the Vulnerable Software and Affected Versions FreeRDP versions 3.10.0 through 3.32.2 Description A heap buffer overflow occurs in the WinPR png write data callback when a realloc failure happens. A malicious RDP clipboard peer can trigger an out-of-bounds memcpy during PNG conversion by...

PT-2026-110667

Name of the Vulnerable Software and Affected Versions FreeRDP versions 3.0.0 through 3.31.0 Description A heap buffer overflow occurs in the collect keys function during PKCS11 key enumeration. Local attackers can exploit this by using smartcard tokens that present more than 64 public key objects...

CVE-2026-109245: Improper Certificate Validation

FreeRDP 3.0.0 before 3.32.0 contains an improper certificate validation vulnerability in freerdphttprequest in libfreerdp/utils/http.c that completes TLS handshakes without verifying the server certificate chain. On-path attackers can impersonate login.microsoftonline.com in the Azure AD...

CVE-2026-109249: Out-of-bounds Read

FreeRDP 3.0.0 before 3.32.0 contains a heap out-of-bounds read in freerdpassistanceparseallelementsof because it advances its parsing cursor without reducing the remaining length, letting the scan window exceed the decrypted ConnectionString2 buffer. Attackers can supply a crafted .msrcIncident...

TencentOS Server 3: freerdp (TSSA-2026:1131)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:1131 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:...

PT-2026-110668

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.32.0 Description The software fails to check the server-supplied signed MS-RDPEGT geometry origin, storing it in an unsigned video surface coordinate. This causes the blit clamp in the gdiVideoShowSurface function t...

PT-2026-110672

Name of the Vulnerable Software and Affected Versions FreeRDP versions 3.0.0 through 3.31.0 Description An integer truncation issue exists in the license check stream length function. A malicious RDP server can exploit this by sending a crafted SERVER LICENSE REQUEST containing a large scopeCount...

PT-2026-110658

Name of the Vulnerable Software and Affected Versions FreeRDP versions prior to 3.32.0 Description A NULL pointer dereference occurs in the client video redirection channel. This issue allows a malicious server to cause a denial of service by sending out-of-order messages. Specifically, an attack...

CVE-2026-109247: Improper Limitation of a Pathname to a Restricted Directory

FreeRDP before 3.32.0 contains a path traversal vulnerability in convertfiledescriptorstofilelist in winpr/libwinpr/clipboard/syntheticfile.c, which concatenates server-supplied cFileName values from FileGroupDescriptorW clipboard data into the published local file:// URI without rejecting '/' or...

CVE-2026-109248: Out-of-bounds Read

FreeRDP 3.0.0 before 3.32.0 contains a heap out-of-bounds read in the WinPR clipboard function convertfiledescriptorstofilelist, which scans a server-controlled FILEDESCRIPTORW cFileName with unbounded wcschr and countspecialchars calls without a NUL-termination guarantee. A malicious RDP server...

CVE-2026-109250: Improper Validation of Array Index

FreeRDP 3.0.0 before 3.32.0 contains a heap buffer overflow vulnerability in collectkeys that allows local attackers to write past the fixed 64-entry keys array during PKCS11 key enumeration. Attackers controlling smartcard tokens can present more than 64 public key objects across multiple slots ...

CVE-2026-109251: Improper Validation of Array Index

FreeRDP before 3.32.0 stores the server-supplied signed MS-RDPEGT geometry origin unchecked in an unsigned video surface coordinate, so the blit clamp in gdiVideoShowSurface wraps in 32-bit arithmetic and is skipped. A malicious RDP server can send a negative topLevelLeft to clients connecting wi...

CVE-2026-109255: Heap-based Buffer Overflow

FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in licensecheckstreamlength that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVERLICENSEREQUEST with a large scopeCount that bypasses length checks, causi...

CVE-2026-109256: Heap-based Buffer Overflow

FreeRDP 3.10.0 through 3.32.2 contains a heap buffer overflow in the WinPR pngwritedata callback that writes past the buffer after a realloc failure. A malicious RDP clipboard peer can supply a large CFDIB image that triggers out-of-bounds memcpy during PNG conversion, causing a client crash...

PT-2026-110665

Name of the Vulnerable Software and Affected Versions FreeRDP versions 3.0.0 through 3.31.0 Description A heap out-of-bounds read exists in the WinPR clipboard function convert filedescriptors to file list. The issue occurs when the function scans a server-controlled FILEDESCRIPTORW cFileName usi...

PT-2026-110662

Name of the Vulnerable Software and Affected Versions FreeRDP versions 3.0.0 through 3.31.0 Description An improper certificate validation issue exists in the freerdp http request function within libfreerdp/utils/http.c. This flaw allows TLS handshakes to complete without verifying the server...

PT-2026-110670

Name of the Vulnerable Software and Affected Versions FreeRDP versions 3.9.0 through 3.31.0 Description An out-of-bounds read exists in the RDPEAR NDR scalar readers, which occur when value length is checked before consuming alignment padding. A malicious or compromised RDP server can send crafte...

PT-2026-110657

Name of the Vulnerable Software and Affected Versions FreeRDP versions 3.11.0 through 3.32.0 Description A reachable assertion issue exists in the urb isoch transfer function. A malicious RDP server can cause the client to crash by sending unvalidated OutputBufferSize values. Specifically, an...