NHI card’s web service component - Heap-based Buffer Overflow

published 2022-08-02 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-38110

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits: 0; none known

The NHI card’s web service component has a heap-based buffer overflow vulnerability due to insufficient validation for packet origin parameter length. A LAN attacker with general user privilege can exploit this vulnerability to disrupt service.

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

NHI card’s web service component

Classification

Weakness

CWE-787 Out-of-bounds Write
CWE-770 Allocation of Resources Without Limits or Throttling

References

twcert.org.tw /tw/cp-132-6354-1cf61-1.html
third-party-advisory

Sources

CVE List CVE-2022-35218
NVD CVE-2022-35218

Fencer Vulns 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.

Summary