{"id":"CVE-2020-15654","published":"2020-08-10T17:43:24Z","modified":"2024-08-04T13:22:30Z","title":"When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is…","vendor":"Mozilla","product":"Firefox ESR","tier":"core","eol":null,"affectedVersions":[{"vendor":"Mozilla","product":"Firefox ESR","versions":[">= unspecified, < 78.1"]},{"vendor":"Mozilla","product":"Firefox","versions":[">= unspecified, < 79"]},{"vendor":"Mozilla","product":"Thunderbird","versions":[">= unspecified, < 78.1"]}],"description":{"text":"When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is interacting with the user interface, when they are not. This could lead to a perceived broken state, especially when interactions with existing browser dialogs and warnings do not work. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":null,"epss":{"score":0.01423,"percentile":0.72899,"date":"2026-10-31","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2020-08-06","exploitedFirstSeen":"2020-08-06","ransomware":false,"evidence":[{"url":"https://www.zdnet.com/article/firefox-gets-fix-for-evil-cursor-attack/","date":"2020-08-06"}],"evidenceTotal":1,"provenance":"source"},"exploited":true,"otx":null,"cwes":[],"references":[{"url":"https://www.mozilla.org/security/advisories/mfsa2020-30/","tags":["x_refsource_MISC"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-32/","tags":["x_refsource_MISC"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-33/","tags":["x_refsource_MISC"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1648333","tags":["x_refsource_MISC"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"https://usn.ubuntu.com/4443-1/","tags":["vendor-advisory","x_refsource_UBUNTU"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2020-7641","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-7641","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2020-08-06","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://www.zdnet.com/article/firefox-gets-fix-for-evil-cursor-attack/","provenance":"source"},{"date":"2020-08-10","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2020-15654","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":49.6,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 2278 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":14.58,"detail":"percentile 0.7290"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":0.0,"detail":"no CVSS"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}