How severe is CVE-2009-0022?

CVE-2009-0022 has a CVSS 2.0 base score of 6.3, rated medium severity.

Is CVE-2009-0022 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0022?

CVE-2009-0022 primarily affects Samba. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0022?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-0022 published?

CVE-2009-0022 was published on 2009-01-05 and last updated on 2026-06-16.

CVE-2009-0022

CVE-2009-0022 is a medium-severity vulnerability in Samba with a CVSS 2.0 base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 6.3)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Samba
Published: 2009-01-05
Last modified: 2026-06-16

Description

Samba 3.2.0 through 3.2.6, when registry shares are enabled, allows remote authenticated users to access the root filesystem via a crafted connection request that specifies a blank share name.

Frequently asked questions

What is CVE-2009-0022?: Samba 3.2.0 through 3.2.6, when registry shares are enabled, allows remote authenticated users to access the root filesystem via a crafted connection request that specifies a blank share name.
How severe is CVE-2009-0022?: CVE-2009-0022 has a CVSS 2.0 base score of 6.3, rated medium severity.
Is CVE-2009-0022 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0022?: CVE-2009-0022 primarily affects Samba. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0022?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0022 published?: CVE-2009-0022 was published on 2009-01-05 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:samba:samba:3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.2.1:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.2.2:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.2.3:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.2.4:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.2.5:*:*:*:*:*:*:*
cpe:2.3:a:samba:samba:3.2.6:*:*:*:*:*:*:*

More vulnerabilities in Samba

CVE-2015-0240 — Critical (CVSS 10.0): The Netlogon server implementation in smbd in Samba 3.5.x and 3.6.x before 3.6.25, 4.0.x before 4.0.25, 4.1.x before…
CVE-2012-1182 — Critical (CVSS 10.0): The RPC code generator in Samba 3.x before 3.4.16, 3.5.x before 3.5.14, and 3.6.x before 3.6.4 does not implement…
CVE-2007-2446 — Critical (CVSS 10.0): Multiple heap-based buffer overflows in the NDR parsing in smbd in Samba 3.0.0 through 3.0.25rc3 allow remote attackers…
CVE-2004-0882 — Critical (CVSS 10.0): Buffer overflow in the QFILEPATHINFO request handler in Samba 3.0.x through 3.0.7 may allow remote attackers to execute…
CVE-2004-1154 — Critical (CVSS 10.0): Integer overflow in the Samba daemon (smbd) in Samba 2.x and 3.0.x through 3.0.9 allows remote authenticated users to…
CVE-2004-0600 — Critical (CVSS 10.0): Buffer overflow in the Samba Web Administration Tool (SWAT) in Samba 3.0.2 to 3.0.4 allows remote attackers to execute…

All CVEs affecting Samba →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →