CVE-2021-42138: thales cpl safenet authentication service Insufficient Entropy
CVSS: 7.2v3.1HighModified
Published 20-12-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-42138 is a high (CVSS 7.2) Insufficient Entropy vulnerability in thales cpl safenet authentication service. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.9% of scored vulnerabilities.
CVSS score
7.2/10
010
High · v3.1 (CVE.org)EPSS score
0.60%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 20-12-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.2Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:NSources2 sources · 6.5–7.2
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NDiffers
Low 3.5Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
0.60%
Chance of exploitation in the next 30 days
Percentile
48%
Versus all other CVEs
30-day change
+0.02 pp
From 0.58% on 21-09-2026
21-09-202621-10-2026
EPSS score0.60%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Thales cpl1 product
- safenet authentication service≥ Windows Logon Agent, < 3.4.4
Thalesgroup1 product
- safenet_windows_logon_agent< 3.4.4
2 vendors · 2 products