CVE-2026-27211

CRITICAL
中文标题:
（暂无数据）
英文标题:
Cloud Hypervisor: Host File Exfiltration via QCOW Backing File Abuse
CVSS分数: 9.1
发布时间: 2026-02-21 05:36:33
漏洞类型: （暂无数据）
状态: PUBLISHED
数据质量分数: 0.40
数据版本: v3
漏洞描述
中文描述:

（暂无数据）

英文描述:

Cloud Hypervisor is a Virtual Machine Monitor for Cloud workloads. Versions 34.0 through 50.0 arevulnerable to arbitrary host file exfiltration (constrained by process privileges) when using virtio-block devices backed by raw images. A malicious guest can overwrite its disk header with a crafted QCOW2 structure pointing to a sensitive host path. Upon the next VM boot or disk scan, the image format auto-detection parses this header and serves the host file's contents to the guest. Guest-initiated VM reboots are sufficient to trigger a disk scan and do not cause the Cloud Hypervisor process to exit. Therefore, a single VM can perform this attack without needing interaction from the management stack. Successful exploitation requires the backing image to be either writable by the guest or sourced from an untrusted origin. Deployments utilizing only trusted, read-only images are not affected. This issue has been fixed in version 50.1. To workaround, enable land lock sandboxing and restrict process privileges and access.

CWE类型:
CWE-73
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
cloud-hypervisor cloud-hypervisor >= 34.0, < 50.1 - - cpe:2.3:a:cloud-hypervisor:cloud-hypervisor:>=_34.0,_<_50.1:*:*:*:*:*:*:*
cloudhypervisor cloud_hypervisor * - - cpe:2.3:a:cloudhypervisor:cloud_hypervisor:*:*:*:*:*:rust:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
https://github.com/cloud-hypervisor/cloud-hypervisor/security/advisories/GHSA-jmr4-g2hv-mjj6 x_refsource_CONFIRM
cve.org
访问
https://github.com/cloud-hypervisor/cloud-hypervisor/commit/081a6ebb5184228ff348601502258f3f72bd8b43 x_refsource_MISC
cve.org
访问
https://github.com/cloud-hypervisor/cloud-hypervisor/commit/509832298b6865365b00bda88722e76e41ce7f41 x_refsource_MISC
cve.org
访问
https://github.com/cloud-hypervisor/cloud-hypervisor/commit/a63315df54e06f6ec867f17b63076c266e2d8648 x_refsource_MISC
cve.org
访问
https://github.com/cloud-hypervisor/cloud-hypervisor/commit/cb495959a8bea1b56e8fc82d15ba527a0e7fcf3c x_refsource_MISC
cve.org
访问
https://github.com/cloud-hypervisor/cloud-hypervisor/releases/tag/v50.1 x_refsource_MISC
cve.org
访问
https://github.com/cloud-hypervisor/cloud-hypervisor/releases/tag/v51.0 x_refsource_MISC
cve.org
访问
CVSS评分详情
4.0 (cna)
CRITICAL
9.1
CVSS向量: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H
机密性
HIGH
完整性
NONE
可用性
NONE
后续系统影响 (Subsequent):
机密性
HIGH
完整性
HIGH
可用性
HIGH
时间信息
发布时间:
2026-02-21 05:36:33
修改时间:
2026-02-21 05:36:33
创建时间:
2026-02-22 06:00:00
更新时间:
2026-02-25 06:00:03
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2026-27211 2026-02-22 03:19:44 2026-02-21 22:00:00
NVD nvd_CVE-2026-27211 2026-02-22 02:00:04 2026-02-21 22:00:01
版本与语言
当前版本: v3
主要语言: EN
支持语言:
EN
安全公告
暂无安全公告信息
变更历史
v3 NVD
2026-02-25 06:00:03
affected_products_count: 1 → 2
查看详细变更
  • affected_products_count: 1 -> 2
v2 NVD
2026-02-22 06:00:01
data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • data_sources: ['cve'] -> ['cve', 'nvd']