How severe is CVE-2020-15806?

CVE-2020-15806 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-15806 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15806?

CVE-2020-15806 primarily affects Codesys Control For Beaglebone. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-15806?

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-2020-15806 published?

CVE-2020-15806 was published on 2020-07-22 and last updated on 2026-06-17.

CVE-2020-15806

CVE-2020-15806 is a high-severity vulnerability in Codesys Control For Beaglebone with a CVSS 3.x base score of 7.5. 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-401.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-401
Affected product: Codesys Control For Beaglebone
Published: 2020-07-22
Last modified: 2026-06-17

Description

CODESYS Control runtime system before 3.5.16.10 allows Uncontrolled Memory Allocation.

Frequently asked questions

What is CVE-2020-15806?: CODESYS Control runtime system before 3.5.16.10 allows Uncontrolled Memory Allocation.
How severe is CVE-2020-15806?: CVE-2020-15806 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-15806 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15806?: CVE-2020-15806 primarily affects Codesys Control For Beaglebone. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-15806?: 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-2020-15806 published?: CVE-2020-15806 was published on 2020-07-22 and last updated on 2026-06-17.

References

Affected products (17)

cpe:2.3:a:codesys:control_for_beaglebone:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_empc-a\/imx6:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_iot2000:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_linux:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_pfc100:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_pfc200:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_plcnext:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_raspberry_pi:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_for_wago_touch_panels_600:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_rte:*:*:*:*:*:-:*:*
cpe:2.3:a:codesys:control_rte:*:*:*:*:*:beckhoff_cx:*:*
cpe:2.3:a:codesys:control_runtime_system_toolkit:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:control_win:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:embedded_target_visu_toolkit:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:hmi:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:remote_target_visu_toolkit:*:*:*:*:*:*:*:*
cpe:2.3:a:codesys:simulation_runtime:*:*:*:*:*:*:*:*

More vulnerabilities in Codesys Control For Beaglebone

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CVE-2020-12069 — High (CVSS 7.8): In CODESYS V3 products in all versions prior V3.5.16.0 containing the CmpUserMgr, the CODESYS Control runtime system…

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