How severe is CVE-2009-4452?

CVE-2009-4452 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-4452 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4452?

CVE-2009-4452 primarily affects Kaspersky Lab Kaspersky Anti-virus. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4452?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4452 published?

CVE-2009-4452 was published on 2009-12-29 and last updated on 2026-06-16.

CVE-2009-4452

CVE-2009-4452 is a medium-severity vulnerability in Kaspersky Lab Kaspersky Anti-virus with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Kaspersky Lab Kaspersky Anti-virus
Published: 2009-12-29
Last modified: 2026-06-16

Description

Kaspersky Anti-Virus 5.0 (5.0.712); Antivirus Personal 5.0.x; Anti-Virus 6.0 (6.0.3.837), 7 (7.0.1.325), 2009 (8.0.0.x), and 2010 (9.0.0.463); and Internet Security 7 (7.0.1.325), 2009 (8.0.0.x), and 2010 (9.0.0.463); use weak permissions (Everyone:Full Control) for the BASES directory, which allows local users to gain SYSTEM privileges by replacing an executable or DLL with a Trojan horse.

Frequently asked questions

What is CVE-2009-4452?: Kaspersky Anti-Virus 5.0 (5.0.712); Antivirus Personal 5.0.x; Anti-Virus 6.0 (6.0.3.837), 7 (7.0.1.325), 2009 (8.0.0.x), and 2010 (9.0.0.463); and Internet Security 7 (7.0.1.325), 2009 (8.0.0.x), and 2010 (9.0.0.463); use weak permissions (Everyone:Full Control) for the BASES directory, which allows local users to gain SYSTEM privileges by replacing an executable or DLL with a Trojan horse.
How severe is CVE-2009-4452?: CVE-2009-4452 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2009-4452 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4452?: CVE-2009-4452 primarily affects Kaspersky Lab Kaspersky Anti-virus. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4452?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4452 published?: CVE-2009-4452 was published on 2009-12-29 and last updated on 2026-06-16.

References

Affected products (13)

cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus:5.0.712:*:windows_workstations:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus:6.0.3.837:*:windows_file_servers:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus:6.0.3.837:*:windows_workstation:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus:7.0.1.325:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus_2009:8.0.0.454:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus_2010:9.0.0.463:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus_personal:5.0:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus_personal:5.0.227:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus_personal:5.0.228:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_anti-virus_personal:5.0.325:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_internet_security:7.0.1.325:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_internet_security_2009:8.0.0.506:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky_lab:kaspersky_internet_security_2010:9.0.0.463:*:*:*:*:*:*:*

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