CVE-2009-2906

4.0 MEDIUM 4% exploit odds Fix listed

What it is

smbd in Samba 3.0 before 3.0.37, 3.2 before 3.2.15, 3.3 before 3.3.8, and 3.4 before 3.4.2 allows remote authenticated users to cause a denial of service (infinite loop) via an unanticipated oplock break notification reply packet.

At a glance

Exploitability: Can be exploited over the network with a login. Limited direct impact.
Exploit odds: 4.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2009-10-07 18:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:10 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 4.2% in the next 30 days (EPSS).
Severity: 4.0 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2009-10-07 18:30 UTC
Last modified: 2026-06-16 23:10 UTC
Exploit probability: 4.2% · EPSS, next 30 days
Weakness: CWE-835
Record status: Modified

Affected

Samba < 3.0.37
Samba < 3.2.15
Samba < 3.3.8
Samba 3.4.0
Samba 3.4.1
Canonical Ubuntu Linux 6.06
Canonical Ubuntu Linux 8.04
Canonical Ubuntu Linux 8.10

Attack profile CVSS 2.0 · 4.0

Attack vector: Network
Complexity: Low
Authentication: Single
Confidentiality: None
Integrity: None
Availability: Partial

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-2906.md and follow it. Check whether this project is affected by CVE-2009-2906. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record