In Wireshark through 2.6.2, the createapprunningmutex function in wsutil/fileutil.c calls SetSecurityDescriptorDacl to set a NULL DACL, which allows attackers to modify the access control arbitrarily.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-14438.json"