CVE-2021-37909 json
CHANGING Inc. TSSServiSignAdapter Windows Versions - Improper Input Validation
published 5y ago modified 4mo ago also EUVD-2021-24387
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
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.
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2.01% chance of exploitation in the next 30 days, higher than 80% 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 | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- CHANGING Inc. TSSServiSignAdapter
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
twcert.org.tw
/tw/cp-132-5093-76f04-1.html
third-party-advisory
Sources
- CVE List CVE-2021-37909
- NVD CVE-2021-37909
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.