How severe is CVE-2020-12524?

CVE-2020-12524 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-2020-12524 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12524?

CVE-2020-12524 primarily affects Phoenixcontact Btp 2043w Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12524?

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-2020-12524 published?

CVE-2020-12524 was published on 2020-12-02 and last updated on 2026-06-17.

CVE-2020-12524

CVE-2020-12524 is a high-severity vulnerability in Phoenixcontact Btp 2043w Firmware 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-400.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Phoenixcontact Btp 2043w Firmware
Published: 2020-12-02
Last modified: 2026-06-17

Description

Uncontrolled Resource Consumption can be exploited to cause the Phoenix Contact HMIs BTP 2043W, BTP 2070W and BTP 2102W in all versions to become unresponsive and not accurately update the display content (Denial of Service).

Frequently asked questions

What is CVE-2020-12524?: Uncontrolled Resource Consumption can be exploited to cause the Phoenix Contact HMIs BTP 2043W, BTP 2070W and BTP 2102W in all versions to become unresponsive and not accurately update the display content (Denial of Service).
How severe is CVE-2020-12524?: CVE-2020-12524 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-2020-12524 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12524?: CVE-2020-12524 primarily affects Phoenixcontact Btp 2043w Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12524?: 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-2020-12524 published?: CVE-2020-12524 was published on 2020-12-02 and last updated on 2026-06-17.

References

https://cert.vde.com/en-us/advisories/vde-2020-047

Affected products (3)

cpe:2.3:o:phoenixcontact:btp_2043w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:btp_2070w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:btp_2102w_firmware:*:*:*:*:*:*:*:*

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