The ProcGetReservedColormapEntries function in the TOG-CUP extension in X.Org Xserver before 1.4.1 allows context-dependent attackers to read the contents of arbitrary memory locations via a request containing a 32-bit value that is improperly used as an array index.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.03
EPSS Ranking 85.8%