CVE-2025-14309Network attack vector

Service interruption via unchecked virtio queue pointers

Published Dec 9, 2025 · Updated Dec 9, 2025

NULL pointer dereference in ravynOS 0 through 0.5.2 allows remote attackers to interrupt the bhyve device-model service. The vq_endchains function in usr.sbin/bhyve/virtio.c dereferences vq and vq->used without first rejecting a null queue or used-ring pointer. No authentication or user interaction is required; the published impact is limited to availability, with no reported data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in ravynOS 0 through 0.5.2 allows remote attackers to interrupt the bhyve device-model service. The vq_endchains function in usr.sbin/bhyve/virtio.c dereferences vq and vq->used without first rejecting a null queue or used-ring pointer. No authentication or user interaction is required; the published impact is limited to availability, with no reported data disclosure or modification.

The record

CVE
CVE-2025-14309
Published
Dec 9, 2025
Updated
Dec 9, 2025
Vendor
RavynSoft
Product
ravynOS
Classifications
CWE-476, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RavynSoft · ravynOSversion=0 <=0.5.2

Published CVSS scores

7.5Government Technology Agency of Singapore Cyber Security GroupCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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