Xcitium Client Security (XCS) before 13.8.2.10019 and Comodo Internet Security (CIS) through 12.3.4.8162 (fix expected by 2026 Q3) contain an integer underflow vulnerability in the firewall driver Inspect.sys that allows remote unauthenticated attackers to crash the system by sending a crafted IPv6 packet with a declared payload length smaller than the sum of its extension-header lengths. The unsigned 64-bit payload-length value underflows to a near-maximal integer, triggering an out-of-bounds read and oversized memcpy in the Windows kernel at DISPATCHLEVEL, resulting in a blue screen of death even on hosts with all ports blocked.

Comodo Dragon Browser versions up to 52.15.25.663 contain a privilege escalation vulnerability in the DragonUpdater service due to an unquoted service path running with SYSTEM privileges. A local attacker can insert a malicious executable in the service path and execute arbitrary code with elevated privileges upon service restart or system reboot.

Comodo Chromodo Browser 52.15.25.664 contains an unquoted service path vulnerability in the ChromodoUpdater service that runs with SYSTEM privileges. A local attacker can insert a malicious executable in the service path and execute arbitrary code with elevated privileges upon service restart or system reboot.

A vulnerability classified as problematic was found in Comodo Dragon up to 134.0.6998.179. Affected by this vulnerability is an unknown functionality of the component HSTS Handler. The manipulation leads to security check for standard. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability, which was classified as problematic, has been found in Comodo Dragon up to 134.0.6998.179. Affected by this issue is some unknown functionality of the component IP DNS Leakage Detector. The manipulation leads to cleartext transmission of sensitive information. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability, which was classified as problematic, was found in Comodo Dragon up to 134.0.6998.179. This affects an unknown part of the component IP DNS Leakage Detector. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability classified as critical has been found in Comodo Internet Security Premium 12.3.4.8162. This affects an unknown part of the component Update Handler. The manipulation leads to improper certificate validation. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability classified as critical was found in Comodo Internet Security Premium 12.3.4.8162. This vulnerability affects unknown code of the file cisupdatex64.xml of the component Manifest File Handler. The manipulation leads to improper validation of integrity check value. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability, which was classified as critical, has been found in Comodo Internet Security Premium 12.3.4.8162. This issue affects some unknown processing of the file cisupdatex64.xml of the component Manifest File Handler. The manipulation of the argument binary/params leads to os command injection. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability, which was classified as critical, was found in Comodo Internet Security Premium 12.3.4.8162. Affected is an unknown function of the component File Name Handler. The manipulation of the argument name/folder leads to path traversal. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by submitting crafted input to the username parameter. Attackers can send POST requests to the vpnusers endpoint with script payloads in the username field to execute arbitrary JavaScript in victim browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the openvpnadvanced endpoint. Attackers can inject JavaScript code through the GLOBALNETWORKS and GLOBALDNS parameters via POST requests to execute arbitrary scripts in users' browsers.

Comodo Dome Firewall 2.7.0 contains multiple reflected cross-site scripting vulnerabilities in the openvpnusers endpoint that allow attackers to inject malicious scripts through POST parameters. Attackers can submit crafted POST requests with script payloads in the username, remotenets, explicitroutes, staticip, customdns, or customdomain parameters to execute arbitrary JavaScript in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the antispyware endpoint. Attackers can send POST requests with JavaScript payloads in the DNSMASQWHITELIST or DNSMASQBLACKLIST parameters to execute arbitrary code in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the dnsmasq endpoint. Attackers can send POST requests with script payloads in the TRANSPARENTSOURCEBYPASS or TRANSPARENTDESTINATIONBYPASS parameters to execute arbitrary JavaScript in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the VIRUSADMIN parameter. Attackers can send POST requests to the smtpconfig endpoint with script payloads to execute arbitrary JavaScript in the context of an administrator's browser session.

Comodo Dome Firewall 2.7.0 contains multiple reflected cross-site scripting vulnerabilities in the /korugan/proxyconfig endpoint that allow attackers to inject malicious scripts through POST parameters. Attackers can submit crafted POST requests with JavaScript payloads in parameters like PROXYPORT, VISIBLEHOSTNAME, ADMINMAILADDRESS, CACHEMEM, MAXSIZE, MINSIZE, and DSTNOCACHE to execute arbitrary scripts in administrator browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting unsanitized input to the EXCEPTIONSITELIST parameter. Attackers can craft POST requests to the httpsexceptions endpoint with script payloads to execute arbitrary JavaScript in users' browsers and steal session data.

Comodo Dome Firewall 2.7.0 contains multiple cross-site scripting vulnerabilities that allow attackers to inject malicious scripts through the policyfw endpoint. Attackers can submit POST requests with JavaScript payloads in the mac, target, and remark parameters to execute arbitrary code in administrator browsers or store persistent scripts in the application.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the snat endpoint. Attackers can send POST requests with JavaScript payloads in the port or snattoip parameters to execute arbitrary scripts in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the FWADDRESSES parameter. Attackers can send POST requests to the /korugan/fwgroups endpoint with script payloads to execute arbitrary JavaScript in users' browsers and steal session data.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the protocol parameter. Attackers can send POST requests to the QoS rules management endpoint with JavaScript payloads in the protocol parameter to execute arbitrary code in administrator browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting unsanitized input to the hotspotpermanentusers endpoint. Attackers can send POST requests with JavaScript payloads in the MACADDRESSES parameter to execute arbitrary scripts in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input through the device parameter. Attackers can send POST requests to the QoS devices management endpoint with script payloads in the device parameter to execute arbitrary JavaScript in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating the ID parameter. Attackers can craft requests to the /manage/ips/appid/ endpoint with script payloads in the ID parameter to execute arbitrary JavaScript in victim browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating the ID parameter. Attackers can craft requests to the /manage/ips/rules/ endpoint with script payloads in the ID parameter to execute arbitrary JavaScript in victim browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting unsanitized input through the NTPSERVERLIST parameter. Attackers can send POST requests to the /korugan/time endpoint with script payloads in the NTPSERVERLIST parameter to execute arbitrary JavaScript in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by manipulating the GATEWAYGREEN parameter. Attackers can send POST requests to the DHCP configuration endpoint with script payloads to execute arbitrary JavaScript in administrator browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts through the source and destination parameters. Attackers can submit POST requests to the policy routing endpoint with script payloads in these parameters to execute arbitrary JavaScript in users' browsers.

Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the netmaskaddr parameter. Attackers can send POST requests to the netwizard2 endpoint with script payloads in the netmaskaddr parameter to execute arbitrary JavaScript in users' browsers.