CVE-2026-1709Keylime: keylime: authentication bypass allows unauthorized administrative operations due to missing client-side tls authentication
- 9.4CriticalCVSS base score
- 5.7%Exploitation in 30 daysEPSS · top 6.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A flaw was found in Keylime. The Keylime registrar, since version 7.12.0, does not enforce client-side Transport Layer Security (TLS) authentication. This authentication bypass vulnerability allows unauthenticated clients with network access to perform administrative operations, including listing agents, retrieving public Trusted Platform Module (TPM) data, and deleting agents, by connecting without presenting a client certificate.
Timeline
ID reserved
By redhat
- 7 days later
· 7 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Critical9.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H |
| redhat-SADPADP (enrichment) | 3.1 | Critical9.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 5.7% · top 6.9% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.4.
Affected products
Red Hat · Red Hat Enterprise Linux 10
- unaffected 0:7.12.1-11.el10_1.4 – < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support
- unaffected 0:7.12.1-2.el10_0.5 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:7.12.1-11.el9_7.4 – < *
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPIkeylimeGHSA-4jqp-9qjv-57m2 (opens in a new tab)
What to do
Workaround: Restrict network access to the Keylime registrar's HTTPS port (default 8891) to only trusted verifier and tenant hosts using firewall rules. Alternatively, deploy a reverse proxy (e.g., Nginx, HAProxy) in front of the registrar to enforce client certificate authentication. Ensure any changes to firewall rules or proxy configurations are reloaded or services are restarted for the mitigation to take effect.
References
References6
- RHSA-2026:2224 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:2225 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:2298 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-1709 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2435514 (opens in a new tab)issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1709.json (opens in a new tab)x_sadp-csaf-vex
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-5599 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-4jqp-9qjv-57m2 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-1709)Record last updated .