What is CVE-2022-32959?

CVE-2022-32959 is a medium-severity vulnerability in Hinet Hicos’ Client-Side Citizen Digital Certificate, classified under Out-of-bounds Write. CVSS score: 6.8/10. Published 2022-07-20.

How severe is CVE-2022-32959?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Buffer overflow in Hinet Hicos’ Client-Side Citizen Digital Certificate

CVE-2022-32959

HiCOS’ client-side citizen digital certificate component has a stack-based buffer overflow vulnerability when reading IC card due to insufficient parameter length validation for OS information. An unauthenticated physical attacker can exploit this vulnerability to execute arbitrary code, manipulate system data or terminate service.

Vulnerability class: Buffer Overflow

Published 2022-07-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Hinet Hicos’ Client-Side Citizen Digital Certificate — versions unspecified
Hinet Hicos Natural Person Credential Component Client — versions 3.0.3.30306, 3.0.3.30404, 3.1.0.00002

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.twcert.org.tw/tw/cp-132-6290-738fe-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2022-32959?: CVE-2022-32959 is a medium-severity vulnerability in Hinet Hicos’ Client-Side Citizen Digital Certificate, classified under Out-of-bounds Write. CVSS score: 6.8/10. Published 2022-07-20.
How severe is CVE-2022-32959?: Medium severity. CVSS v3 base score is 6.8 out of 10.