CVE-2015-4870

CVE-2015-4870 is an unspecified vulnerability in Oracle MySQL Server versions 5.5.45 and earlier, and 5.6.26 and earlier, impacting availability through unknown vectors related to the server's parser. This vulnerability affects numerous distributions including Canonical, Debian, Fedora, MariaDB, openSUSE, Oracle, and Red Hat. With a CVSS score of 4.0 (AV:N/AC:L/Au:S/C:N/I:N/A:P), it indicates a network-exploitable flaw requiring authentication, leading to partial denial of service. While not listed in CISA's KEV catalog, one public exploit (EDB-39867) exists, demonstrating a denial-of-service attack via the 'procedure analyse' function. Despite the existence of exploit code, there is no evidence of active exploitation, and community discussion and media coverage are minimal.