CVE-2021-42138 json
A user of a machine protected by SafeNet Agent for Windows Logon may leverage weak entropy to access the encrypted credentials of any or al…
published 2021-12-20 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29121
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
A user of a machine protected by SafeNet Agent for Windows Logon may leverage weak entropy to access the encrypted credentials of any or all the users on that machine.
Patch / fix
- Thales CPL Safenet Authentication Service 3.4.4
Exploit prediction
0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:P/I:N/A:N |
Affected products
- Thales CPL Safenet Authentication Service
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
-
cpl.thalesgroup.com
/support/security-updates
vendor-advisory
-
supportportal.gemalto.com
/csm?sys_kb_id=a52bd13adbff7010f0e322080596194a&id=kb_article_view&sysparm_rank=1&sysparm_tsqueryId=b3bdd932db
permissions-required
-
supportportal.gemalto.com
/csm?sys_kb_id=e8397662dbb7fc10520c4705059619eb&id=kb_article_view&sysparm_rank=2&sysparm_tsqueryId=b3bdd932db
permissions-required
Sources
- CVE List CVE-2021-42138
- NVD CVE-2021-42138
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.