CVE-2015-7645

CVE-2015-7645 is a code execution vulnerability in Adobe Flash Player in which a remote attacker can execute arbitrary code by having the player process a maliciously crafted SWF (Flash) file. Triggering requires only that a user load attacker-supplied Flash content, for example by visiting a compromised or malicious website, opening a document that embeds Flash content, or receiving an SWF payload delivered through an exploit kit. Successful exploitation lets the attacker run arbitrary code in the context of the Flash process, typically enabling malware or ransomware installation and compromise of the user's account and data. Anyone running Adobe Flash Player when the flaw was disclosed in 2015 was affected, and because Flash has since reached end-of-life, any installations that remain in use are unpatched. Exploitation is confirmed in the wild: the flaw is in CISA's Known Exploited Vulnerabilities catalog (added 2022-03-03) with known ransomware use, and its EPSS score of 65.6% (99th percentile) indicates a high probability of exploitation.

What to do: Remove or disable Adobe Flash Player entirely, consistent with CISA's required action, which notes the product is end-of-life and should be disconnected if still in use; audit for legacy Flash instances in intranet applications, bundled enterprise software, and older browser configurations. If Flash cannot be removed, install the latest patched release available from Adobe for this vulnerability and ensure browsers block or sandbox SWF content. Given the confirmed ransomware use, prioritize hunting for exploitation on any systems where Flash remains installed.