<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Patchfirst: CVEs linked to T1048.003 Exfiltration Over Unencrypted Non-C2 Protocol</title><link>https://patchfirst.co/technique/T1048.003/</link><atom:link href="https://patchfirst.co/feed/technique/T1048.003.xml" rel="self" type="application/rss+xml"/><description>New and newly exploited CVEs that lead to ATT&amp;CK T1048.003 Exfiltration Over Unencrypted Non-C2 Protocol, with CISA KEV and EPSS context. Newest 50 by publication or KEV listing.</description><language>en-gb</language><ttl>360</ttl><lastBuildDate>Sat, 31 Oct 2026 05:11:25 GMT</lastBuildDate><item><title>[KEV] CVE-2021-34473: Microsoft Exchange Server Remote Code Execution Vulnerability</title><link>https://patchfirst.co/cve/CVE-2021-34473/</link><guid isPermaLink="false">CVE-2021-34473#kev</guid><pubDate>Wed, 03 Nov 2021 00:00:00 GMT</pubDate><description>Microsoft · Exchange Server. In CISA KEV since 2021-11-03, known ransomware use. ENISA EUVD lists it as exploited. EPSS &gt;99.9% (higher than 99.99% of CVEs). CVSS 9.1 CRITICAL. Public exploit code exists. ATT&amp;CK: T1190 Exploit Public-Facing Application; T1053.005 Scheduled Task; T1048.003 Exfiltration Over Unencrypted Non-C2 Protocol; T1136 Create Account; T1486 Data Encrypted for Impact. Named in 9 threat reports. Priority 89.4 of 100.</description><category>kev</category><category>ransomware</category><category>public-exploit</category><category>T1190</category><category>T1053.005</category><category>T1048.003</category><category>T1136</category><category>T1486</category></item></channel></rss>