CVE-2012-4704

CVE-2012-4704 is a critical-severity vulnerability in 3s-software Codesys Gateway-server 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-20.

Key facts

Description

Array index error in 3S CODESYS Gateway-Server before 2.3.9.27 allows remote attackers to execute arbitrary code via a crafted packet.

Frequently asked questions

What is CVE-2012-4704?
Array index error in 3S CODESYS Gateway-Server before 2.3.9.27 allows remote attackers to execute arbitrary code via a crafted packet.
How severe is CVE-2012-4704?
CVE-2012-4704 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2012-4704 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4704?
CVE-2012-4704 primarily affects 3s-software Codesys Gateway-server. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-4704?
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-2012-4704 published?
CVE-2012-4704 was published on 2013-02-24 and last updated on 2026-06-16.

References

Affected products (17)

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