CVE-2025-13609 — keylime
HIGHCVE-2025-13609 is a high-severity (CVSS 8.2) CWE-694 vulnerability in keylime. A fix is available for keylime — see the affected versions and patch details below.
Keylime: keylime: registrar allows identity takeover via duplicate uuid registration
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-13609.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2025-13609 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,333 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
keylimeReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
A vulnerability has been identified in keylime where an attacker can exploit this flaw by registering a new agent using a different Trusted Platform Module (TPM) device but claiming an existing agent's unique identifier (UUID). This action overwrites the legitimate agent's identity, enabling the attacker to impersonate the compromised agent and potentially bypass security controls.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | keylime | all versions | 7.13.0pip install --upgrade 'keylime==7.13.0' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for keylime, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update keylime to 7.13.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-13609 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-13609 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2025-13609. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
This vulnerability is rated Important for Red Hat products as the Keylime registrar allows an attacker to perform an identity takeover. By registering a new agent with a duplicate UUID, an attacker can overwrite an existing agent's identity, enabling impersonation and potential bypass of security controls. This…
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Enterprise Linux 10 | keylime-0:7.12.1-11.el10_1.3 | RHSA-2025:23201 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | keylime-0:7.12.1-2.el10_0.4 | RHSA-2026:0429 |
| Red Hat Enterprise Linux 9 | keylime-0:7.12.1-11.el9_7.3 | RHSA-2025:23210 |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | keylime-0:6.5.2-6.el9_2.1 | RHSA-2025:23735 |
| Red Hat Enterprise Linux 9.4 Extended Update Support | keylime-0:7.3.0-13.el9_4.1 | RHSA-2025:23852 |
| Red Hat Enterprise Linux 9.6 Extended Update Support | keylime-0:7.3.0-15.el9_6.1 | RHSA-2025:23628 |
Frequently Asked Questions
Is CVE-2025-13609 in your dependencies?
O3 Security finds CVE-2025-13609 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.