VulnSocial

CVE-2026-27211Disclosure(cloudhypervisor / cloud_hypervisor)

LOWCVSS 10.0 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

cloudhypervisor CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-73

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • cloud_hypervisor

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-02-24); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
cloudhypervisor
Products
cloud_hypervisor

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-02-24: 1Mentions · 2026-03-03: 1Technical Details · 2026-02-24: 102-2403-03
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-02-241
Disclosure1
2026-03-031
General1
Full discourse2 posts
  • AgniOps@AgniOpsIn
    General

    🚨 CVE-2026-27211 breakdown Attack surface, real-world impact, and what defenders should fix now. If you don’t understand the vulnerability, you can’t secure against it. 🔗 https://www.agniops.in/post/cve-2026-27211 #CVE #CyberSecurity #VulnResearch #AgniOps

    Post summary

    The tweet promotes a detailed breakdown of CVE-2026-27211, linking to an external article for more information, but does not provide technical details, exploit code, or patch information.

    0001043
    2 followersView on X
  • The Hacker Wire@TheHackerWire
    Disclosure

    🔴 CVE-2026-27211 - Critical 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 us... https://www.thehackerwire.com/vulnerability/CVE-2026-27211/ https://t.co/2H8QJWQGXE

    Post summary

    A new critical vulnerability (CVE-2026-27211) in Cloud Hypervisor allows arbitrary host file exfiltration under certain conditions, affecting versions 34.0‑50.0.

    0000074
    113 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appcloudhypervisorcloud_hypervisor-rust-

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