CVE-2013-3947

CVE-2013-3947 is a high-severity vulnerability in Ahnlab V3 Internet Security with a CVSS 3.x base score of 7.8. 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-119.

Key facts

Description

Buffer overflow in MedCoreD.sys in AhnLab V3 Internet Security 8.0.7.5 (Build 1373) allows local users to gain privileges via a crafted 0xA3350014 IOCTL call.

Frequently asked questions

What is CVE-2013-3947?
Buffer overflow in MedCoreD.sys in AhnLab V3 Internet Security 8.0.7.5 (Build 1373) allows local users to gain privileges via a crafted 0xA3350014 IOCTL call.
How severe is CVE-2013-3947?
CVE-2013-3947 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2013-3947 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-3947?
CVE-2013-3947 affects Ahnlab V3 Internet Security. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-3947?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-3947 published?
CVE-2013-3947 was published on 2018-04-24 and last updated on 2026-06-16.

References

Affected products (1)

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