CVE-2011-5123

CVE-2011-5123 is a critical-severity vulnerability in Comodo Comodo Internet Security with a CVSS 2.0 base score of 10.0. 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-310.

Key facts

Description

The Antivirus component in Comodo Internet Security before 5.3.175888.1227 does not check whether X.509 certificates in signed executable files have been revoked, which has unknown impact and remote attack vectors.

Frequently asked questions

What is CVE-2011-5123?
The Antivirus component in Comodo Internet Security before 5.3.175888.1227 does not check whether X.509 certificates in signed executable files have been revoked, which has unknown impact and remote attack vectors.
How severe is CVE-2011-5123?
CVE-2011-5123 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-5123 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5123?
CVE-2011-5123 primarily affects Comodo Comodo Internet Security. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-5123?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-5123 published?
CVE-2011-5123 was published on 2012-08-26 and last updated on 2026-06-16.

References

Affected products (30)

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