RCE in Red Hat Certificate System 9
CVE-2026-76561
A flaw was found in Dogtag PKI, as used by FreeIPA's certificate authority component. The certificate profile import functionality does not fully validate uploaded profile content beyond the profile ID. An authenticated user with CA Administrator privileges can exploit Dogtag's ExternalProcessConstraint mechanism to execute arbitrary commands with attacker-controlled environment variables, achieving code execution as the pkiuser account.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-76561 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:73765 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:73766 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:75573 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86621 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86624 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86625 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:86623 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-76561?
- CVE-2026-76561 is a high-severity vulnerability in Red Hat Certificate System 9, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-09-08.
- How severe is CVE-2026-76561?
- High severity. CVSS v3 base score is 7.2 out of 10.