[UPDATE] [medium] Red Hat OpenStack Keystone: Vulnerability allows privilege escalation

mediumCVE-2026-40683

A remote, authenticated attacker can exploit a vulnerability in Red Hat OpenStack Keystone to bypass authentication and gain unauthorized access to the system.

CSIRTS triage

vendor: Red Hat product: OpenStack Keystone Authentication bypass Privilege escalation

What: A remote, authenticated attacker can exploit a vulnerability in Red Hat OpenStack Keystone to bypass authentication and gain unauthorized access to the system.
Who is affected: Authenticated users of Red Hat OpenStack Keystone.
Urgency: Remediation is medium urgency as it allows unauthorized access to the system.
Action: Apply the latest security patches to mitigate this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-15
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1116

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-406830.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-40683	coverage & exploitation status	NVD · CVE.org