HID OMNIKEY 5427 and OMNIKEY 5127 readers are vulnerable to CSRF when using the EEM driver (Ethernet Emulation Mode).

published 2021-03-24 5y ago modified 2026-06-17 4mo ago also EUVD-2020-23825

cvss: 9.6; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits: 0; none known

HID OMNIKEY 5427 and OMNIKEY 5127 readers are vulnerable to CSRF when using the EEM driver (Ethernet Emulation Mode). By persuading an authenticated user to visit a malicious Web site, a remote attacker could send a malformed HTTP request to upload a configuration file to the device. An attacker could exploit this vulnerability to perform cross-site scripting attacks, Web cache poisoning, and other malicious activities.

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Exploit prediction

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.6	CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:C/UI:R
CNA	3.1	9.6	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-352 Cross-Site Request Forgery

References

hidglobal.com /sites/default/files/resource_files/hid-psa-2020-01-omnikey-csrf-security-advisory-paper.pdf
mitigation, vendor-advisory
exchange.xforce.ibmcloud.com /vulnerabilities/198443
third-party-advisory, vdb-entry

Sources

CVE List CVE-2020-36283
NVD CVE-2020-36283

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