An issue was discovered in signmgr.dll 6.5.0.819 in Comodo Internet Security through 12.0. A DLL Preloading vulnerability allows an attacker to implant an unsigned DLL named iLog.dll in a partially unprotected product directory. This DLL is then loaded into a high-privileged service before the binary signature validation logic is loaded, and might bypass some of the self-defense mechanisms.

Multiple race conditions in Comodo Internet Security before 5.8.211697.2124 allow local users to bypass the Defense+ feature via unspecified vectors.

Multiple race conditions in Comodo Internet Security before 5.8.213334.2131 allow local users to bypass the Defense+ feature via unspecified vectors.

The Antivirus component in Comodo Internet Security before 4.1.150349.920 allows remote attackers to cause a denial of service (application crash) via a crafted file.

The Antivirus component in Comodo Internet Security before 3.8.64739.471 allows remote attackers to cause a denial of service (application crash) via a crafted file.

The Antivirus component in Comodo Internet Security before 5.4.189822.1355 allows remote attackers to cause a denial of service (application crash) via a crafted .PST file.

The Antivirus component in Comodo Internet Security before 5.3.175888.1227 does not properly check whether unspecified X.509 certificates are revoked, which has unknown impact and remote attack vectors.

The Antivirus component in Comodo Internet Security before 5.3.175888.1227 does not check whether X.509 certificates in signed executable files have been revoked, which has unknown impact and remote attack vectors.

Comodo Internet Security before 3.9.95478.509 allows remote attackers to bypass malware detection in an RAR archive via an unspecified manipulation of the archive file format.

The Antivirus component in Comodo Internet Security before 5.3.174622.1216 does not check whether X.509 certificates in signed executable files have been revoked, which has unknown impact and remote attack vectors.