HOMEVULNERABILITIESCVE-2021-27223
MEDIUM

CVE-2021-27223

NVD-CWE-noinfoPublished: April 1, 2022· Updated: Jun 17, 2026

5.5
CVSS v3.1

Official Description

A denial-of-service issue existed in one of modules that was incorporated in Kaspersky Anti-Virus products for home and Kaspersky Endpoint Security. A local user could cause Windows crash by running a specially crafted binary module. The fix was delivered automatically. Credits: (Straghkov Denis, Kurmangaleev Shamil, Fedotov Andrey, Kuts Daniil, Mishechkin Maxim, Akolzin Vitaliy) @ ISPRAS

NVD Source

Technical Analysis

CVE-2021-27223 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

kaspersky6 product(s)
anti-virusendpoint securityinternet securitysecurity cloudsmall office securitytotal security
Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

→
https://support.kaspersky.com/general/vulnerability.aspx?el=12430#310322_1Broken Link
→
https://support.kaspersky.com/general/vulnerability.aspx?el=12430#310322_1Broken Link

Quick Facts

CVE IDCVE-2021-27223
CVSS Score5.5 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected1 vendor(s)
PublishedApr 1, 2022

Related CVEs (NVD-CWE-noinfo)

CVE-2019-16650
10.0
CVE-2020-1953
10.0
CVE-2019-9548
10.0
CVE-2019-11210
10.0
CVE-2019-1372
10.0
CVE-2020-14701
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-27223 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2021-27223·NVD