CVE-2021-37909 | BDVDB-2026-160987 Detail

CHANGINGTSSServiSignAdapter

Description#

WriteRegistry function in TSSServiSign component does not filter and verify users’ input, remote attackers can rewrite to the registry without permissions thus perform hijack attacks to execute arbitrary code.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-20 Improper Input Validation

References#

https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html

Exploit#

No public exploit known

History#

Version 12021-09-15Record published in the CVE List.
Version 22024-09-17Most recent update recorded in the CVE List.

Published

Published: 2021-09-15
Last modified: 2024-09-17

Vendor information

Vendor: CHANGING
Product: TSSServiSignAdapter

All CHANGING vulnerabilities

Score

9.8 Critical

EPSS

2.0%, Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 81.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Improper Input Validation

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
<= 1.0.20.0316
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).