How severe is CVE-2009-2966?

CVE-2009-2966 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-2966 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2966?

CVE-2009-2966 primarily affects Kaspersky Kaspersky Anti-virus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2966?

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

When was CVE-2009-2966 published?

CVE-2009-2966 was published on 2009-08-25 and last updated on 2026-06-16.

CVE-2009-2966

CVE-2009-2966 is a medium-severity vulnerability in Kaspersky Kaspersky Anti-virus with a CVSS 2.0 base score of 4.3. 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Kaspersky Kaspersky Anti-virus
Published: 2009-08-25
Last modified: 2026-06-16

Description

avp.exe in Kaspersky Internet Security 9.0.0.459 and Anti-Virus 9.0.0.463 allows remote attackers to cause a denial of service (CPU consumption and network connectivity loss) via an HTTP URL request that contains a large number of dot "." characters.

Frequently asked questions

What is CVE-2009-2966?: avp.exe in Kaspersky Internet Security 9.0.0.459 and Anti-Virus 9.0.0.463 allows remote attackers to cause a denial of service (CPU consumption and network connectivity loss) via an HTTP URL request that contains a large number of dot "." characters.
How severe is CVE-2009-2966?: CVE-2009-2966 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-2966 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2966?: CVE-2009-2966 primarily affects Kaspersky Kaspersky Anti-virus. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2966?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2966 published?: CVE-2009-2966 was published on 2009-08-25 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:kaspersky:kaspersky_anti-virus:9.0.0.463:*:*:*:*:*:*:*
cpe:2.3:a:kaspersky:kaspersky_internet_security:9.0.0.459:*:*:*:*:*:*:*

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