Delinea Secret Server: Authentication bypass via second factor login step
Summary
Delinea Secret Server versions earlier than 12.3.1 allow a user to bypass the initial login step. By successfully completing only the second factor login step, an attacker can authenticate without passing the first factor. The CVSS v4.0 base score is 8.7 (High), and the CNA rates the impact on confidentiality and integrity as high.
Affected
- Delinea Secret Server (on-premises and cloud) versions earlier than 12.3.1
- The vendor advisory lists affected versions as 12.2.7 and earlier
Fixed in
- Upgrade to Secret Server version 12.3.1 or later
Workaround
Unknown.
Exploitation
- Not known to be exploited in the wild
- Not listed in CISA KEV
- CISA SSVC: exploitation none, automatable no, technical impact total
Our recommendation
- Upgrade on-premises and self-managed Secret Server to version 12.3.1 or later
- Limit access to the Secret Server web interface to required networks and users
- Review authentication logs for sessions that completed the second factor without a normal first login step
- Enforce MFA and review privileged account activity after patching
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Delinea Security Advisories delinea.com
- Delinea Secret Server 12.3 release notes docs.delinea.com
- VulDB entry 429358 vuldb.com
- Strix CVE record CVE-2026-115829 www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 23:20.
Original description (NVD)
In Secret Server versions earlier than 12.3.1, a user could bypass the initial login step and authenticate by successfully negotiating the second factor login step only.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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