Array index error in the SMBv2 protocol implementation in srv2.sys in Microsoft Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold a
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.
- Published
- Sep 8, 2009
- Updated
- Jun 16, 2026
- EPSS
- 92.3% · 100th percentile
- CWE
- CWE-399
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Report tools
Action score
68
This week
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- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 28 / 30 · 92.3%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| microsoft | windows server 2008 | cpe:2.3:o:microsoft:windows_server_2008 |
| microsoft | windows vista | cpe:2.3:o:microsoft:windows_vista |
Using windows server 2008? Add it to your stack and be the first to know about CVEs like this one. (Windows Server, Active Directory)
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft windows server 2008all versions
- microsoft windows server 2008sp2
Same product
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Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×3
- Exploit-DB entry ×6
- Proof-of-concept repository on GitHub ×6
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | dos | 2010-05-07 |
| Exploit-DB entry | dos | 2009-11-11 |
| Exploit-DB entry | dos | 2009-09-09 |
| Exploit-DB entry | remote | 2016-02-26 |
| Exploit-DB entry | remote | 2010-08-17 |
| Exploit-DB entry | remote | 2010-07-03 |
| Metasploit module | auxiliary/dos/windows/smb/ms09_050_smb2_negotiate_pidhighMicrosoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereferenceauxiliary | — |
| Metasploit module | auxiliary/dos/windows/smb/ms09_050_smb2_session_logoffMicrosoft SRV2.SYS SMB2 Logoff Remote Kernel NULL Pointer Dereferenceauxiliary | — |
| Metasploit module | exploit/windows/smb/ms09_050_smb2_negotiate_func_indexMS09-050 Microsoft SRV2.SYS SMB Negotiate ProcessID Function Table Dereferenceexploit | 2009-09-07 |
| Proof-of-concept repository on GitHub | stars:1 | 2017-01-17 |
| Proof-of-concept repository on GitHub | stars:0 | 2023-10-29 |
| Proof-of-concept repository on GitHub | stars:4 | 2023-12-20 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploit-2 d
- Published
- First PoCsame day
- TodaySep 30, 2026+6230 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
CWE-399 · Resource Management ErrorsCVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- blog.48bits.com/?p=510
- isc.sans.org/diary.html?storyid=7093
- osvdb.org/57799
- secunia.com/advisories/36623
- www.exploit-db.com/exploits/9594
- www.kb.cert.org/vuls/id/135940
- www.microsoft.com/technet/security/advisory/975497.mspx
- www.reversemode.com/index.php?option=com_content&task=view&id=64&Itemid=1
- www.securityfocus.com/archive/1/506300/100/0/threaded
- www.securityfocus.com/archive/1/506327/100/0/threaded
- www.securitytracker.com/id?1022848
- www.us-cert.gov/cas/techalerts/TA09-286A.html
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-050
- exchange.xforce.ibmcloud.com/vulnerabilities/53090
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6489
Vendor advisories and official records. Exploit/PoC links are deliberately left out.