<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Patchfirst: Checkbox vulnerabilities</title><link>https://patchfirst.co/vendor/checkbox/</link><atom:link href="https://patchfirst.co/feed/vendor/checkbox.xml" rel="self" type="application/rss+xml"/><description>New and newly exploited Checkbox CVEs, with CISA KEV, EPSS and ATT&amp;CK context. Newest 50 by publication or KEV listing.</description><language>en-gb</language><ttl>360</ttl><lastBuildDate>Sat, 31 Oct 2026 13:00:36 GMT</lastBuildDate><item><title>[KEV] CVE-2021-27852: Checkbox Survey Deserialization of Untrusted Data Vulnerability</title><link>https://patchfirst.co/cve/CVE-2021-27852/</link><guid isPermaLink="false">CVE-2021-27852#kev</guid><pubDate>Mon, 11 Apr 2022 00:00:00 GMT</pubDate><description>Checkbox · Checkbox Survey. In CISA KEV since 2022-04-11. ENISA EUVD lists it as exploited. EPSS 30.3% (higher than 98.2% of CVEs). CVSS 9.8 CRITICAL. ATT&amp;CK: T1190 Exploit Public-Facing Application; T1059 Command and Scripting Interpreter. Priority 64.5 of 100.</description><category>kev</category><category>T1190</category><category>T1059</category></item></channel></rss>