Oracle MySQL 5.1 before 5.1.49 and 5.5 before 5.5.5 allows remote authenticated users to cause a denial of service (mysqld daemon crash) by using the HANDLER interface and performing "alternate reads from two indexes on a table," which triggers an assertion failure.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.053
EPSS Ranking 89.6%