CVE-2011-5007

CVE-2011-5007 is a critical-severity vulnerability in 3ssoftware Codesys with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 73% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Description

Stack-based buffer overflow in the CmpWebServer component in 3S CoDeSys 3.4 SP4 Patch 2 and earlier, as used on the ABB AC500 PLC and possibly other products, allows remote attackers to execute arbitrary code via a long URI to TCP port 8080.

Frequently asked questions

What is CVE-2011-5007?
Stack-based buffer overflow in the CmpWebServer component in 3S CoDeSys 3.4 SP4 Patch 2 and earlier, as used on the ABB AC500 PLC and possibly other products, allows remote attackers to execute arbitrary code via a long URI to TCP port 8080.
How severe is CVE-2011-5007?
CVE-2011-5007 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-5007 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5007?
CVE-2011-5007 affects 3ssoftware Codesys. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-5007?
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-2011-5007 published?
CVE-2011-5007 was published on 2011-12-25 and last updated on 2026-06-16.

References

Affected products (1)

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