How severe is CVE-2020-12514?

CVE-2020-12514 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-12514 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12514?

CVE-2020-12514 primarily affects Pepperl-fuchs Io-link Master 4-eip Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12514?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-12514 published?

CVE-2020-12514 was published on 2021-01-22 and last updated on 2026-06-17.

CVE-2020-12514

CVE-2020-12514 is a medium-severity vulnerability in Pepperl-fuchs Io-link Master 4-eip Firmware with a CVSS 3.x base score of 6.6. 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
CVSS v2: 4.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Pepperl-fuchs Io-link Master 4-eip Firmware
Published: 2021-01-22
Last modified: 2026-06-17

Description

Pepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to a NULL Pointer Dereference that leads to a DoS in discoveryd

Frequently asked questions

What is CVE-2020-12514?: Pepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to a NULL Pointer Dereference that leads to a DoS in discoveryd
How severe is CVE-2020-12514?: CVE-2020-12514 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-12514 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12514?: CVE-2020-12514 primarily affects Pepperl-fuchs Io-link Master 4-eip Firmware. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12514?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12514 published?: CVE-2020-12514 was published on 2021-01-22 and last updated on 2026-06-17.

References

https://cert.vde.com/en-us/advisories/vde-2020-038

Affected products (12)

cpe:2.3:o:pepperl-fuchs:io-link_master_4-eip_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_8-eip_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_8-eip-l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_dr-8-eip_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_dr-8-eip-p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_dr-8-eip-t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_4-pnio_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_8-pnio_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_8-pnio-l_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_dr-8-pnio_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_dr-8-pnio-p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pepperl-fuchs:io-link_master_dr-8-pnio-t_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Pepperl-fuchs Io-link Master 4-eip Firmware

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CVE-2020-12512 — High (CVSS 7.5): Pepperl+Fuchs Comtrol IO-Link Master in Version 1.5.48 and below is prone to an authenticated reflected POST Cross-Site…

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Other CWE-476 (NULL Pointer Dereference) vulnerabilities

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CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
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