Vulnerability · Published Sep 15, 2021 · Assigned by twcert
CVE-2021-37909CHANGING Inc. TSSServiSignAdapter Windows Versions - Improper Input Validation
Critical 9.8
In plain English
A critical-severity improper input validation in TSSServiSignAdapter from CHANGING Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)2.0%top 19.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CHANGING Inc. | TSSServiSignAdapter | unspecified – through 1.0.20.0316 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.twcert.org.tw/tw/cp-132-5093-76f04-1.html x_refsource_MISC