CVE-2021-27223
CVE-2021-27223 is a medium-severity vulnerability in Kaspersky Anti-virus with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 2.1
- EPSS exploit prediction: 0% (9th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Kaspersky Anti-virus
- Published:
- Last modified:
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
Frequently asked questions
- What is CVE-2021-27223?
- 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
- How severe is CVE-2021-27223?
- CVE-2021-27223 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-27223 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27223?
- CVE-2021-27223 primarily affects Kaspersky Anti-virus. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-27223?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-27223 published?
- CVE-2021-27223 was published on 2022-04-01 and last updated on 2026-06-17.
References
Affected products (6)
- cpe:2.3:a:kaspersky:anti-virus:*:*:*:*:*:*:*:*
- cpe:2.3:a:kaspersky:endpoint_security:*:*:*:*:*:*:*:*
- cpe:2.3:a:kaspersky:internet_security:*:*:*:*:*:*:*:*
- cpe:2.3:a:kaspersky:security_cloud:*:*:*:*:*:*:*:*
- cpe:2.3:a:kaspersky:small_office_security:*:*:*:*:*:*:*:*
- cpe:2.3:a:kaspersky:total_security:*:*:*:*:*:*:*:*
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