Incomplete blacklist vulnerability in sudo 1.6.8 and earlier allows local users to gain privileges via the (1) SHELLOPTS and (2) PS4 environment variables before executing a bash script on behalf of another user, which are not cleared even though other variables are.
AV:L/AC:L/Au:N/C:P/I:P/A:P
This vulnerability has a 0.62% probability of being exploited in the next 30 days, ranking higher than 48% of all scored CVEs.