Hicos citizen certificate client-side component - Command Injection

published 2022-03-01 4y ago modified 2026-06-17 4mo ago also EUVD-2020-5060

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.8%; EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits: 0; none known

Hicos citizen certificate client-side component does not filter special characters for command parameters in specific web URLs. An unauthenticated remote attacker can exploit this vulnerability to perform command injection attack to execute arbitrary system command, disrupt system or terminate service.

Patch / fix

links 1

moica.nat.gov.tw/rac_plugin.html advisory

Is CVE-2020-12775 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

2.80% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

Hicos citizen certificate client-side component

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

moica.nat.gov.tw /rac_plugin.html
patch, vendor-advisory
twcert.org.tw /tw/cp-132-5695-421a7-1.html
third-party-advisory

Sources

CVE List CVE-2020-12775
NVD CVE-2020-12775

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.