Gentoo Linux Security Advisory 201606-1 - Multiple vulnerabilities have been found in PuTTY, the worst of which could lead to arbitrary code execution, or cause a Denial of Service condition. Versions less than 0.67 are affected.
6a84eb6672b2182112486fe81f3f78c362afd60d9996d53f4558af78d9e99fe3
PuTTY / PSCP versions 0.66 and below suffer from a buffer overflow vulnerability. Proof of concept code included.
6d2b3558ad305a2127d39e8456e3f26082ca091a09253ee93d740417df3f0fd8