VulnerabilityDeferred

CVE-2026-19117

Under specific conditions, an attacker can register an attacker-controlled FIDO2 credential against a target account and then authenticate as that user.

CRITICAL 9.8EPSS 0.28%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Under specific conditions, an attacker can register an attacker-controlled FIDO2 credential against a target account and then authenticate as that user. This issue affects on-premises deployments only.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.28% probability · 21th percentile
CISA KEV: Not listed
Weakness: CWE-290
Source: 1443cd92-d354-46d2-9290-d812316ca43a

References

https://delinea.com/security-advisories

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.