PT-2021-2389 · Microsoft · Windows Server+1

Published 2021-03-09 · Updated 2023-12-29 · CVE-2021-26896

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Windows Server (affected versions not specified)

Description: The issue is related to insufficient input validation in the DNS server service of Windows Server operating systems. This can be exploited by a remote attacker to cause a denial of service.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2021-01630

CVE-2021-26896

Affected Products

Windows

Windows Server

References · 9

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26896 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26896 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26896 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-01630 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-26896 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-26896 · Security Note
• https://osv.dev/vulnerability/CVE-2021-26896 · Vendor Advisory
• https://cybersecurity-help.cz/vdb/SB2021030914 · Note
• https://t.me/cibsecurity/24766 · Telegram Post