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Vulnerability record · CVE-2007-2729 · published 16 May 2007

CVE-2007-2729: Comodo firewall pro vulnerability

Comodo · Comodo Firewall Pro

Comodo Firewall Pro 2.4.18.184 and Comodo Personal Firewall 2.3.6.81, and probably older Comodo Firewall versions, do not properly test for equivalence of process identifiers for certain Microsoft Windows API functions in the NT kernel 5.0 and greater, which allows local users to call these functions, and bypass firewall rules or gain privileges, via a modified identifier that is one, two, or three greater than the canonical identifier.

7.2 CVSS 2.0 High EPSS 0.32% · top 77.7%
7.2CVSS 2.0 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

Comodo Firewall Pro 2.4.18.184 and Comodo Personal Firewall 2.3.6.81, and probably older Comodo Firewall versions, do not properly test for equivalence of process identifiers for certain Microsoft Windows API functions in the NT kernel 5.0 and greater, which allows local users to call these functions, and bypass firewall rules or gain privileges, via a modified identifier that is one, two, or three greater than the canonical identifier.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/37375
http://securityreason.com/securityalert/2714
http://www.matousec.com/info/advisories/Bypassing-PWF-HIPS-open-process-control-with-uncommon-identifier.php Vendor Advisory
http://www.securityfocus.com/archive/1/468643/100/0/threaded
http://osvdb.org/37375
http://securityreason.com/securityalert/2714
http://www.matousec.com/info/advisories/Bypassing-PWF-HIPS-open-process-control-with-uncommon-identifier.php Vendor Advisory
http://www.securityfocus.com/archive/1/468643/100/0/threaded

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.2CVE-2008-1736Comodo personal firewall vulnerabilityComodo Firewall Pro before 3.0 does not properly validate certain parameters to hooked System Service Descriptor Table (SSDT) functions, which allows…EPSS 0.37%7.2CVE-2007-2730Checkpoint zonealarm vulnerabilityCheck Point ZoneAlarm Pro before 6.5.737.000 does not properly test for equivalence of process identifiers for certain Microsoft Windows API function…EPSS 0.32%7.2CVE-2007-0708Comodo firewall pro vulnerabilitycmdmon.sys in Comodo Firewall Pro (formerly Comodo Personal Firewall) before 2.4.16.174 does not validate arguments that originate in user mode for t…EPSS 0.67%7.2CVE-2007-0709Comodo firewall pro vulnerabilitycmdmon.sys in Comodo Firewall Pro (formerly Comodo Personal Firewall) 2.4.16.174 and earlier does not validate arguments that originate in user mode …EPSS 0.48%7.2CVE-2006-6618Avg antivirus plus firewall vulnerabilityAntiHook 3.0.0.23 - Desktop relies on the Process Environment Block (PEB) to identify a process, which allows local users to bypass the product's con…EPSS 0.33%7.2CVE-2006-6619Avg antivirus plus firewall vulnerabilityAVG Anti-Virus plus Firewall 7.5.431 relies on the Process Environment Block (PEB) to identify a process, which allows local users to bypass the prod…EPSS 0.99%7.2CVE-2006-6620Avg antivirus plus firewall vulnerabilityComodo Personal Firewall 2.3.6.81 relies on the Process Environment Block (PEB) to identify a process, which allows local users to bypass the product…EPSS 0.33%7.2CVE-2006-6621Avg antivirus plus firewall vulnerabilityFilseclab Personal Firewall 3.0.0.8686 relies on the Process Environment Block (PEB) to identify a process, which allows local users to bypass the pr…EPSS 0.33%

Source: NIST National Vulnerability Database (record CVE-2007-2729), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.