CVE-2021-43215

—

CVSS 3.1

9.8 critical

EPSS

3%p85

Published

Dec 15, 2021 (Dec 15, 2021)

Modified

Jun 17, 2026

Description

iSNS Server Memory Corruption Vulnerability Can Lead to Remote Code Execution

Vendors: microsoft
Products: windows 10, windows 11, windows 7, windows 8.1, windows rt 8.1, windows server, windows server 2008, windows server 2012, windows server 2016, windows server 2019
Weakness: CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (2.7%)

In the news5 stories

Microsoft December 2021 Patch Tuesday fixes an actively exploited zero

Security AffairsDec 15, 15:08 UTC · Dec 15, 2021Vulnerability in the wildCVE-2021-43890 CVE-2021-43240 CVE-2021-41333+54 CVEs

60

Log4j Looms Large Over Patch Tuesday

Infosecurity MagazineDec 15, 09:00 UTC · Dec 15, 2021Vulnerability in the wildCVE-2021-43890 CVE-2021-43893 CVE-2021-43883+4 CVEs

60

Microsoft Issues Windows Update to Patch 0

The Hacker NewsDec 15, 00:00 UTC · Dec 15, 2021Vulnerability in the wildCVE-2021-43890 CVE-2021-43240 CVE-2021-43883+10 CVEs

60

Microsoft patches spoofing vulnerability exploited by Emotet (CVE-2021-43890)

Help Net SecurityDec 14, 00:00 UTC · Dec 14, 2021Vulnerability in the wildCVE-2021-43890 CVE-2021-43905 CVE-2021-43215+2 CVEs

60

Threat Source Newsletter (Dec. 16, 2021)

Cisco TalosDec 10, 12:00 UTC · Dec 10, 2021Exploit / PoC in the wildCVE-2021-4102 CVE-2021-44228 CVE-2021-43215

60