Well, it depends on how the exploit was being used and who was being targeted. If SK was only using it to target, say, Iran and NK, then it would not be in the

Well, it depends on how the exploit was being used and who was being targeted. If SK was only using it to target, say, Iran and NK, then it would not be in the NSA's interest to disclose the exploit to anyone. Only if they had reason to believe it could be targeting Five Eyes governments or corporations would they feel any need to.