saned in sane-backends 1.0.7 and earlier does not check the IP address of the connecting host during the SANE_NET_INIT RPC call, which allows remote attackers to use that call even if they are restricted in saned.conf.

saned in sane-backends 1.0.7 and earlier does not quickly handle connection drops, which allows remote attackers to cause a denial of service (segmentation fault) when invalid memory is accessed.

saned in sane-backends 1.0.7 and earlier, and possibly later versions, does not properly allocate memory in certain cases, which could allow attackers to cause a denial of service (memory consumption).

saned in sane-backends 1.0.7 and earlier, when debug messages are enabled, does not properly handle dropped connections, which can prevent strings from being null terminated and cause a denial of service (segmentation fault).

saned in sane-backends 1.0.7 and earlier calls malloc with an arbitrary size value if a connection is dropped before the size value has been sent, which allows remote attackers to cause a denial of service (memory consumption or crash).

saned in sane-backends 1.0.7 and earlier does not properly "check the validity of the RPC numbers it gets before getting the parameters," with unknown consequences.

Certain backend drivers in the SANE library 1.0.3 and earlier, as used in frontend software such as XSane, allows local users to modify files via a symlink attack on temporary files.