PT-2021-3304 · Microsoft · Windows Kernel+1

Boris Larin + 1 · Published 2021-06-08 · Updated 2025-10-30 · CVE-2021-31955

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description The issue is related to errors in privilege management in the Windows Kernel, specifically affecting the ntoskrnl.exe file. This can allow an attacker to gain unauthorized access to protected information. The vulnerability enables attackers to obtain sensitive information and potentially affect the system.

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

Exploit

Improper Privilege Management

Weakness Enumeration

CWE-269

CWE-497

Related Identifiers

BDU:2021-03078

CVE-2021-31955

Affected Products

Windows

Windows Kernel

References · 23

• 🔥 https://github.com/freeide/CVE-2021-31955-POC · Exploit
• 🔥❌ https://github.com/Lagal1990/CVE-2021-31955-POC · Exploit, Deleted
• 🔥❌ https://github.com/Expdev893/CVE-2021-31955-POC · Exploit, Deleted
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31955 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-31955 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03078 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31955 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-31955 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31955 · Security Note
• https://t.me/cvenotify/15934 · Telegram Post
• https://t.me/rnetsec/15524 · Telegram Post
• https://t.me/cvenotify/87770 · Telegram Post
• https://t.me/cvenotify/113953 · Telegram Post
• https://t.me/cybersecuritytechnologies/3705 · Telegram Post