The SPP_VerifyPVV function in nCipher payShield SPP library 1.3.12, 1.5.18 and 1.6.18 returns a Status_OK value even if the HSM returns a different status code, which could cause applications to make incorrect security-critical decisions, e.g. by accepting an invalid PIN number.
https://exchange.xforce.ibmcloud.com/vulnerabilities/14832
http://www.securityfocus.com/bid/9422
http://www.ncipher.com/support/advisories/advisory8_payshield.html