MEDIUM
CVE-2020-12514
CWE-476Published: January 22, 2021· Updated: Jun 17, 2026
4.9
CVSS v3.1
Official 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
Technical Analysis
CVE-2020-12514 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.9.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
pepperl-fuchs24 product(s)
io-link master 4-eip firmwareio-link master 4-eipio-link master 8-eip firmwareio-link master 8-eipio-link master 8-eip-l firmwareio-link master 8-eip-lio-link master dr-8-eip firmwareio-link master dr-8-eipio-link master dr-8-eip-p firmwareio-link master dr-8-eip-pio-link master dr-8-eip-t firmwareio-link master dr-8-eip-t+12
Source: NVD CPE · 24 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (2)
→
https://cert.vde.com/en-us/advisories/vde-2020-038Third Party Advisory
→
https://cert.vde.com/en-us/advisories/vde-2020-038Third Party Advisory
Quick Facts
CVE IDCVE-2020-12514
CVSS Score4.9 / 10
SeverityMEDIUM
WeaknessCWE-476
CISA KEVNo
Affected1 vendor(s)
PublishedJan 22, 2021
Related CVEs (CWE-476)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-12514 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.