CVE-2006-0900

FreeBSD 6.0 - Denial of Service via NFS Mount Request

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2006-0900. PoCs published by Evgeny Legerov, MC, including Metasploit module auxiliary/dos/freebsd/nfsd/nfsd_mount.

AI-analyzed exploit summary This exploit sends a malformed NFS request to trigger a kernel panic in FreeBSD 6.0, causing a denial of service. The payload is a crafted binary packet sent to port 2049 (NFS).

Description

nfsd in FreeBSD 6.0 kernel allows remote attackers to cause a denial of service via a crafted NFS mount request, as demonstrated by the ProtoVer NFS test suite.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Evgeny Legerov · perldosbsd
https://www.exploit-db.com/exploits/1540

This exploit sends a malformed NFS request to trigger a kernel panic in FreeBSD 6.0, causing a denial of service. The payload is a crafted binary packet sent to port 2049 (NFS).

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: FreeBSD 6.0 (nfsd)
No auth needed
Prerequisites: Network access to the target's NFS port (2049/TCP)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC
by MC · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/freebsd/nfsd/nfsd_mount.rb

This Metasploit module exploits a vulnerability in FreeBSD 6.0's NFS RPC service by sending a malformed Mount request packet to port 2049, causing a kernel panic (DoS). The packet structure is hardcoded and designed to trigger the crash.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: FreeBSD 6.0 NFS service
No auth needed
Prerequisites: Network access to target's NFS port (2049)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (7)

Core 7
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/23511
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/16838
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/19017
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/24918
Various Sources vendor-advisory x_refsource_freebsd
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:10.nfs.asc
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/521

Scores

EPSS 0.7933
EPSS Percentile 99.1%

Details

Status published
Products (1)
freebsd/freebsd 6.0
Published Feb 27, 2006
Tracked Since Feb 18, 2026