CVE-2009-2906

Samba vulnerability

CVSS

4.0

EPSS

4.2%

EPSS pct

90th

Exploited

No known

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.

Affected vendor

Samba

Affected product

Samba

CVSS vector

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

Weakness type (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

Published

2009-10-07

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring single-factor authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 4.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2009-2906

Confirm whether Samba Samba is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2009-2906.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2009-2906

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2009-2906 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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