CVE-2025-0373Network attack vector

NFS server crash via FID buffer overflow

Published Jan 30, 2025 · Updated Feb 7, 2025

Stack-based buffer overflow in FreeBSD allows remote authenticated users to crash NFS servers through exported cd9660, tarfs, or ext2fs filesystems. The 64-bit VOP_VPTOFH implementations write four bytes past the destination FID stack buffer while translating an exported file's vnode to its filehandle. Only NFS servers exporting one of these filesystems are affected; demonstrated exploitation causes a kernel panic, while code execution is unproven.

CVSS severity6.0
Medium
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

Stack-based buffer overflow in FreeBSD allows remote authenticated users to crash NFS servers through exported cd9660, tarfs, or ext2fs filesystems. The 64-bit VOP_VPTOFH implementations write four bytes past the destination FID stack buffer while translating an exported file's vnode to its filehandle. Only NFS servers exporting one of these filesystems are affected; demonstrated exploitation causes a kernel panic, while code execution is unproven.

The record

CVE
CVE-2025-0373
Published
Jan 30, 2025
Updated
Feb 7, 2025
Vendor
The FreeBSD Project
Product
FreeBSD
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 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=13.4-RELEASE <p3
  2. Affected versionversion=14.1-RELEASE <p7
  3. Affected versionversion=14.2-RELEASE <p1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The FreeBSD Project · FreeBSDversion=13.4-RELEASE <p3; version=14.1-RELEASE <p7; version=14.2-RELEASE <p1

Published CVSS scores

6.0CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

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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