HOME VULNERABILITIESCVE-2009-3103

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CVE-2009-3103

CWE-399Published: September 8, 2009· Updated: Jun 16, 2026

10.0

CVSS v3.1

Official Description

Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold and SP2, and Windows 7 RC allows remote attackers to execute arbitrary code or cause a denial of service (system crash) via an & (ampersand) character in a Process ID High header field in a NEGOTIATE PROTOCOL REQUEST packet, which triggers an attempted dereference of an out-of-bounds memory location, aka "SMBv2 Negotiation Vulnerability." NOTE: some of these details are obtained from third party information.

Technical Analysis

CVE-2009-3103 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2009-3103. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.

User Interaction

Scope

Impact

ConfidentialityC

IntegrityC

AvailabilityC

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors & Products

Microsoft2 product(s)

windows server 2008windows vista

Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://secunia.com/advisories/36623

ADVISORYhttp://www.microsoft.com/technet/security/advisory/975497.mspx

ADVISORYhttp://secunia.com/advisories/36623

ADVISORYhttp://www.microsoft.com/technet/security/advisory/975497.mspx

All References (36)

→

http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0090.htmlExploit

→

http://blog.48bits.com/?p=510

→

http://g-laurent.blogspot.com/2009/09/windows-vista7-smb20-negotiate-protocol.htmlExploit

→

http://isc.sans.org/diary.html?storyid=7093

→

http://osvdb.org/57799

→

http://secunia.com/advisories/36623Vendor Advisory

→

http://www.exploit-db.com/exploits/9594

→

http://www.kb.cert.org/vuls/id/135940US Government Resource

→

http://www.microsoft.com/technet/security/advisory/975497.mspxVendor Advisory

→

http://www.reversemode.com/index.php?option=com_content&task=view&id=64&Itemid=1

→

http://www.securityfocus.com/archive/1/506300/100/0/threaded

→

http://www.securityfocus.com/archive/1/506327/100/0/threaded

→

http://www.securityfocus.com/bid/36299Exploit

→

http://www.securitytracker.com/id?1022848

→

http://www.us-cert.gov/cas/techalerts/TA09-286A.htmlUS Government Resource

Quick Facts

CVE IDCVE-2009-3103

CVSS Score10.0 / 10

SeverityCRITICAL

WeaknessCWE-399

CISA KEVNo

ExploitPOC

Affected1 vendor(s)

PublishedSep 8, 2009

Related CVEs (CWE-399)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2009-3103 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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