How severe is CVE-2006-3840?

CVE-2006-3840 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-3840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-3840?

CVE-2006-3840 primarily affects Iss Blackice Pc Protection. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-3840?

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

When was CVE-2006-3840 published?

CVE-2006-3840 was published on 2006-07-27 and last updated on 2026-06-16.

CVE-2006-3840

CVE-2006-3840 is a medium-severity vulnerability in Iss Blackice Pc Protection with a CVSS 2.0 base score of 5.0. 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Iss Blackice Pc Protection
Published: 2006-07-27
Last modified: 2026-06-16

Description

The SMB Mailslot parsing functionality in PAM in multiple ISS products with XPU (24.39/1.78/epj/x.x.x.1780), including Proventia A, G, M, Server, and Desktop, BlackICE PC and Server Protection 3.6, and RealSecure 7.0, allows remote attackers to cause a denial of service (infinite loop) via a crafted SMB packet that is not properly handled by the SMB_Mailslot_Heap_Overflow decode.

Frequently asked questions

What is CVE-2006-3840?: The SMB Mailslot parsing functionality in PAM in multiple ISS products with XPU (24.39/1.78/epj/x.x.x.1780), including Proventia A, G, M, Server, and Desktop, BlackICE PC and Server Protection 3.6, and RealSecure 7.0, allows remote attackers to cause a denial of service (infinite loop) via a crafted SMB packet that is not properly handled by the SMB_Mailslot_Heap_Overflow decode.
How severe is CVE-2006-3840?: CVE-2006-3840 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-3840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-3840?: CVE-2006-3840 primarily affects Iss Blackice Pc Protection. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-3840?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-3840 published?: CVE-2006-3840 was published on 2006-07-27 and last updated on 2026-06-16.

References

Affected products (11)

cpe:2.3:a:iss:blackice_pc_protection:3.6cpk:*:*:*:*:*:*:*
cpe:2.3:a:iss:blackice_server_protection:3.6cpk:*:*:*:*:*:*:*
cpe:2.3:a:iss:proventia_desktop:8.0.675.1790:*:*:*:*:*:*:*
cpe:2.3:a:iss:proventia_desktop:8.0.812.1790:*:*:*:*:*:*:*
cpe:2.3:a:iss:realsecure_desktop:7.0epk:*:*:*:*:*:*:*
cpe:2.3:a:iss:realsecure_network:7.0:*:*:*:*:*:*:*
cpe:2.3:a:iss:realsecure_server_sensor:7.0:*:*:*:*:*:*:*
cpe:2.3:h:iss:proventia_a_series_xpu:*:*:*:*:*:*:*:*
cpe:2.3:h:iss:proventia_g_series_xpu:*:*:*:*:*:*:*:*
cpe:2.3:h:iss:proventia_m_series_xpu:*:*:*:*:*:*:*:*
cpe:2.3:h:iss:proventia_server:1.0.914.1880:*:*:*:*:*:*:*

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Other CWE-399 (Resource Management Errors) vulnerabilities

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CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
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