The vulnerability of cross-platform software for protecting network connections, related to errors in the certificate validation process, allows attackers to circumvent security restrictions.
🗓️ 18 Aug 2025 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 5 Views
| Reporter | Title | Published | Views | Family All 68 |
|---|---|---|---|---|
 | CVE-2021-20230 | 23 Feb 202117:15 | – | attackerkb |
 | Alibaba Cloud Linux 3 : 0011: stunnel (ALINUX3-SA-2021:0011) | 14 May 202500:00 | – | nessus |
| AlmaLinux 8 : stunnel (ALSA-2021:0618) | 9 Feb 202200:00 | – | nessus |
| CentOS 8 : stunnel (CESA-2021:0618) | 27 Feb 202100:00 | – | nessus |
| EulerOS 2.0 SP8 : stunnel (EulerOS-SA-2021-1889) | 18 May 202100:00 | – | nessus |
| GLSA-202105-02 : stunnel: Improper certificate validation | 27 May 202100:00 | – | nessus |
| MiracleLinux 8 : stunnel-5.56-5.el8 (AXSA:2021-1521:02) | 20 Jan 202600:00 | – | nessus |
| NewStart CGSL MAIN 6.02 : stunnel Vulnerability (NS-SA-2021-0123) | 27 Oct 202100:00 | – | nessus |
| openSUSE Security Update : stunnel (openSUSE-2021-409) | 15 Mar 202100:00 | – | nessus |
| Oracle Linux 8 : stunnel (ELSA-2021-0618) | 14 Apr 202100:00 | – | nessus |
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02 Sep 2025 00:00Current
7High risk
Vulners AI Score7
CVSS 37.5
CVSS 27.8
EPSS0.01179