UltraVNC revision 1198 has a buffer underflow vulnerability in VNC client code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.
The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ultravnc | Uvnc | * | 1.2.2.3 (excluding) |