CVE-2026-17527: Virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated clusterrole grants create on datavolumes/source, allowing unauthorized pvc clone
CVE-2026-17527 is a vulnerability in Virt-cdi-operator: containerized-data-importer: cdi.kubevirt.io:view aggregated clusterrole grants create on datavolumes/source, allowing unauthorized pvc clone, rated Important by Microsoft, with a CVSS 3.1 base score of 7.7 (High). An attacker can exploit it remotely over the network, with low privileges and without user interaction. Microsoft has not reported exploitation in the wild. The EPSS model estimates a 0.58% probability of exploitation activity in the next 30 days, higher than 48% of all scored vulnerabilities. Microsoft released the fix on 6 August 2026, outside Patch Tuesday. It affects 5 products in 1 product family (Open Source Software).
Key facts
- CVE ID
- CVE-2026-17527
- Severity
- High CVSS 7.7
- Microsoft severity
- Important
- Exploited in the wild
- No
- Publicly disclosed
- No
- Weakness
- CWE-639
- EPSS
- 0.58% (percentile 48%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- July 2026 Patch Tuesday
- Product families
- Open Source Software
CVSS score and vector
Microsoft scores CVE-2026-17527 at 7.7 (temporal 7.7) using CVSS 3.1. Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality impact | High |
| Integrity impact | None |
| Availability impact | None |
Affected products (5)
Open Source Software
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| azl3 kubevirt 1.8.4-1 on Azure Linux 3.0 | Security update | Security Update | ||
| azl3 containerized-data-importer 1.62.0-7 on Azure Linux 3.0 | ||||
| azl3 kubevirt 1.7.1-8 on Azure Linux 3.0 | ||||
| azl3 containerized-data-importer 1.62.0-8 on Azure Linux 3.0 | Release Notes | Security Update | ||
| azl3 containerized-data-importer 1.62.0-9 on Azure Linux 3.0 | Release Notes | Security Update |
NIST NVD data
- NVD status
- Awaiting Analysis
- NVD CVSS
- 7.7 (HIGH)
- NVD weakness
- CWE-639
- Published to NVD
- NVD last modified
References
- https://access.redhat.com/errata/RHSA-2026:59062
- https://access.redhat.com/errata/RHSA-2026:59083
- https://access.redhat.com/errata/RHSA-2026:59109
- https://access.redhat.com/errata/RHSA-2026:60117
- https://access.redhat.com/errata/RHSA-2026:60301
- https://access.redhat.com/errata/RHSA-2026:61666
- https://access.redhat.com/errata/RHSA-2026:62599
- https://access.redhat.com/errata/RHSA-2026:93958
- https://access.redhat.com/security/cve/CVE-2026-17527
- https://bugzilla.redhat.com/show_bug.cgi?id=2507413
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. | |
| 2.0 | Information published. | |
| 3.0 | Information published. | |
| 4.0 | Information published. | |
| 5.0 | Information published. | |
| 6.0 | Information published. | |
| 7.0 | Information published. | |
| 8.0 | Information published. |