Medium Authentication

CVE-2025-12810 — Failure in Password Rotation and Check-in Mechanism in Secret Server Allows Reuse of Credentials

Improper Authentication vulnerability in Delinea Inc. Secret Server On-Prem (RPC Password Rotation modules).This issue affects Secret Server On-Prem: 11.8.1, 11.9.6, 11.9.25. A secret with "change password on check in" enabled automatically checks in even when the password change fails after reaching its retry limit. This leaves the secret in an inconsistent state with the wrong password. Remediation: Upgrade to 11.9.47 or later. The secret will remain checked out when the password change fails.

Published Jan 27, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Delinea

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.5% (30-day exploitation probability)+6
Technical severity (medium)+3
CISA SSVC: exploitation "poc"+5

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.45%

ahead of 38% of scored CVEs · Oct 15, 2026

Affects

Delinea

Secret Server and 1 more

CVSS base

6.5

Medium · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Proof of concept

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Delinea Secret Server, Delinea Secret Server On-Prem).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (authentication), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Delinea	Secret Server	version 11.8.000001version 11.9.000006version 11.9.000025	Vulnerable	NIST National Vulnerability Database
Delinea	Secret Server On-Prem	version 11.8.1version 11.9.6version 11.9.25	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
5.3	CVSS 4.0	Medium	—	—	1443cd92-d354-46d2-9290-d812316ca43a via NIST National Vulnerability Database
5.3	CVSS 4.0	Medium	—	—	Delinea via CVE Program (cve.org) e CISA ADP
6.5	CVSS 3.1	Medium	3.9	2.5	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-287 · Improper Authentication

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 15, 2026 · 3 reading(s) · max 0.45%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
Review authentication logs: logins without MFA, anomalous sessions and recently created accounts.

web/proxy/WAF logsnetwork IDS/IPSauthentication logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · delinea inc./secret server on-prem
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 6.5
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
Jan 27, 2026 · Delinea

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

3 on the record

trust.delinea.com/
Vendor Advisory, NIST National Vulnerability Database
docs.delinea.com/online-help/secret-server/release-notes/ss-rn-11-9-000047.htm
Release Notes, NIST National Vulnerability Database
trust.delinea.com/
Product, NIST National Vulnerability Database

Elsewhere on this site

Delinea
every CVE for this vendor

Authentication
same class

CWE-287
other pages naming this weakness

Related CVEs (same products)

Critical CVE-2026-15639 Reflected Cross-Site Scripting Sep 15, 2026
Critical CVE-2026-15640 Authentication Bypass via SAML Response Manipulation Sep 15, 2026
Critical CVE-2026-15638 Cryptographic Padding Oracle Sep 15, 2026
Critical CVE-2026-19117 Delinea Secret Server FIDO2 credential registration authentication bypass vulnerability Sep 2, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-12810 is "Failure in Password Rotation and Check-in Mechanism in Secret Server Allows Reuse of Credentials", rated Medium. It affects Secret Server (Delinea); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. EPSS 0.45% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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