PT-2021-3777 · Microsoft · Windows+1

Quan Luo · Published 2021-08-10 · Updated 2023-12-28 · CVE-2021-26424

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

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

Description The issue is related to errors in processing packets in the TCP/IP protocol implementation in the Hyper-V virtualization system in Windows. This can allow a remote attacker to execute arbitrary code. The estimated number of potentially affected devices worldwide is not specified. There is no information about real-world incidents where this issue was exploited.

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:2021-04033

CVE-2021-26424

Affected Products

Hyper-V

Windows

References · 14

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26424 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-26424 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26424 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-26424 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-04033 · Security Note
• https://osv.dev/vulnerability/CVE-2021-26424 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26424 · Security Note
• https://vuldb.com/?id.180451 · Note
• https://t.me/cvenotify/19825 · Telegram Post
• https://t.me/cvenotify/65514 · Telegram Post
• https://t.me/cibsecurity/27255 · Telegram Post
• https://securitylab.ru/vulnerability/523239.php · Note
• https://t.me/true_secator/1993 · Telegram Post
• https://tenable.com/blog/microsoft-s-august-2021-patch-tuesday-addresses-44-cves-cve-2021-26424-cve-2021-36948 · Note