Aggregator

A vulnerability classified as critical was found in Phoenix SecureCore for Intel Gemini Lake. This affects an unknown part of the component UEFI Variable Handler. The manipulation results in buffer overflow. This vulnerability is reported as CVE-2024-1598. The attack requires a local approach. No exploit exists. Upgrading the affected component is advised.

A vulnerability was found in Phoenix SecureCore for Intel Kaby Lake, SecureCore for Intel Coffee Lake, SecureCore for Intel Comet Lake and SecureCore for Intel Ice Lake. It has been classified as problematic. Affected by this issue is some unknown functionality. The manipulation leads to improper check for unusual conditions. This vulnerability is documented as CVE-2024-29979. The attack needs to be performed locally. There is not any exploit available. Upgrading the affected component is recommended.

A vulnerability categorized as problematic has been discovered in Phoenix SecureCore for Intel Kaby Lake, SecureCore for Intel Coffee Lake, SecureCore for Intel Comet Lake and SecureCore for Intel Ice Lake. This issue affects some unknown processing. Such manipulation leads to improper check for unusual conditions. This vulnerability is traded as CVE-2024-29980. An attack has to be approached locally. There is no exploit available. It is advisable to upgrade the affected component.

A vulnerability categorized as critical has been discovered in Discourse up to beta 3.4.0.beta3/stable 3.3.2/tests-passed 3.4.0.beta3. This issue affects some unknown processing. Executing manipulation can lead to preservation of permissions. The identification of this vulnerability is CVE-2024-53994. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

A vulnerability was found in Mattermost Mobile Apps up to 2.25.0. It has been classified as problematic. Affected by this issue is some unknown functionality of the component GIF Image Validator. The manipulation leads to improper validation of specified type of input. This vulnerability is documented as CVE-2025-1558. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

A vulnerability has been found in Discourse up to 3.5.0.beta5 and classified as problematic. This vulnerability affects unknown code of the component Content Security Policy Handler. This manipulation causes cross site scripting. This vulnerability is registered as CVE-2025-48954. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

A vulnerability labeled as critical has been found in Mattermost Confluence Plugin up to 1.4.x. Affected by this vulnerability is an unknown functionality of the component Subscription Endpoint. Executing manipulation can lead to missing authorization. This vulnerability is tracked as CVE-2025-48731. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

A vulnerability categorized as problematic has been discovered in Mattermost Confluence Plugin up to 1.4.x. This impacts an unknown function of the component API Call Handler. Such manipulation leads to missing authorization. This vulnerability is referenced as CVE-2025-44001. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

A vulnerability identified as critical has been detected in Mattermost Confluence Plugin up to 1.4.x. Affected is an unknown function of the component Create Channel Subscription Endpoint. Performing manipulation results in missing authentication. This vulnerability is identified as CVE-2025-44004. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

A vulnerability was found in Portabilis i-Educar up to 2.9.0. It has been classified as critical. This impacts an unknown function of the file /module/Api/pessoa of the component API Endpoint. Performing manipulation of the argument ID results in improper authorization. This vulnerability is reported as CVE-2025-8790. The attack is possible to be carried out remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way.

A vulnerability was found in Portabilis i-Educar up to 2.9.0 and classified as problematic. This affects an unknown function of the file /module/Api/Diario of the component API Endpoint. Such manipulation leads to authorization bypass. This vulnerability is documented as CVE-2025-8789. The attack can be executed remotely. Additionally, an exploit exists. 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 Discourse up to 3.4.3/3.5.0.beta4/3.5.0.beta5-dev. This affects an unknown part. Executing manipulation can lead to resource consumption. This vulnerability appears as CVE-2025-48053. The attacker needs to be present on the local network. There is no available exploit. You should upgrade the affected component.

A vulnerability identified as critical has been detected in Discourse up to 3.4.3/3.5.0.beta4/3.5.0.beta5-dev. This impacts the function allowed_iframes of the component Setting Handler. The manipulation leads to insecure automated optimizations. This vulnerability is referenced as CVE-2025-48877. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

A vulnerability has been found in Linux Kernel and classified as problematic. Affected by this vulnerability is an unknown functionality of the component AMD GPU Driver. Performing manipulation results in incomplete cleanup. This vulnerability is known as CVE-2024-36353. Attacking locally is a requirement. No exploit is available.

This daily article is intended to make it easier for those who want to stay updated with my regular Dark Web Informer and X/Twitter posts.

Cisco published advisories and a supplemental post about three zero-day vulnerabilities, two of which were exploited in the wild by an advanced threat actor associated with the ArcaneDoor campaign.

Update September 25: This FAQ blog has been updated to include a reference to an NCSC report on associated malware linked to this campaign.

View Change Log

Background

Tenable’s Research Special Operations (RSO) team has compiled this blog to answer Frequently Asked Questions (FAQ) regarding newly disclosed zero-day vulnerabilities in Cisco Adaptive Security Appliance (ASA) Software and Firewall Threat Defense (FTD) Software that were exploited.

FAQ

When were these vulnerabilities first disclosed?

On September 25, Cisco published advisories [1, 2, 3] and a supplemental post regarding three zero-day vulnerabilities in Cisco Adaptive Security Appliance (ASA) Software, Firewall Threat Defense (FTD) Software, IOS XE Software, and IOS XR Software.

What are the vulnerabilities that were disclosed?

The following three vulnerabilities were disclosed. Two (CVE-2025-20333, CVE-2025-20362) were exploited in the wild.

CVEDescriptionCVSSv3ExploitedCVE-2025-20333Cisco ASA and FTD Software VPN Web Server Remote Code Execution Vulnerability (RCE)9.9YesCVE-2025-20362Cisco ASA and FTD Software VPN Web Server Unauthorized Access Vulnerability6.5YesCVE-2025-20363Cisco ASA and FTD Software, IOS Software, IOS XE Software, and IOS XR Software Web Services RCE9.0No

Were these vulnerabilities exploited as zero-days?

Yes, according to Cisco, CVE-2025-20333 and CVE-2025-20362 were exploited in the wild as zero-days. Both of these vulnerabilities, when chained together, allow an attacker to take over a vulnerable device.

Which threat actors are exploiting these vulnerabilities?

According to Cisco, the malicious activity associated with CVE-2025-20333 and CVE-2025-20362 is linked to UAT4356, also known as Storm-1849, the same threat actor behind the ArcaneDoor campaign from April 2024.

Did UAT4356/Storm-1849 exploit any vulnerabilities in the ArcaneDoor campaign?

Yes, UAT4356 leveraged two vulnerabilities in the ArcaneDoor campaign:

CVE-2024-20353Cisco ASA and Firepower Threat Defense (FTD) Software Web Services Denial of Service VulnerabilityCampaignArcaneDoorThreat ActorsUAT4356 STORM-1849Associated MalwareLINE DANCER LINE RUNNER

Source: talosintelligence.com

CVE-2024-20359Cisco ASA and FTD Software Persistent Local Code Execution VulnerabilityCampaignArcaneDoorThreat ActorsUAT4356 STORM-1849Associated MalwareLINE DANCER LINE RUNNER

Source: talosintelligence.com

Was any malware used by UAT4356/Storm-1849 in this recent campaign?

The National Cyber Security Centre (NCSC) published an alert and a malware analysis report (MAR) detailing two pieces of malware associated with this campaign. The first malware, RayInitiator, is a multi-stage bootkit designed for persistence even if a device is rebooted or upgraded. The second malware, LINE VIPER, is a user-mode shellcode loader that deploys modular payloads to enable various post-compromise activities. It can be tasked and controlled through either HTTPS-based WebVPN sessions or ICMP.

Is there a proof-of-concept (PoC) available for these vulnerabilities?

At the time this blog was published, there were no public proof-of-concept (PoC) exploits for any of the vulnerabilities associated with this campaign.

Cisco also patched CVE-2025-20363. Was this also exploited in the wild?

No. Cisco did not specifically call out CVE-2025-20363 as being exploited in the wild. According to the advisory, Cisco says it was found by members of Cisco’s Advanced Security Initiatives Group (ASIG) as part of a support case.

Are patches or mitigations available for CVE-2025-20333, CVE-2025-20362, CVE-2025-20363?

Yes, Cisco has released the following fixes for Cisco ASA and FTD.

CVEAffected ProductAffected VersionsFixed VersionCVE-2025-20333Cisco ASA Software9.16, 9.17, 9.18, 9.19, 9.20, 9.229.16.4.85, 9.17.1.45, 9.18.4.47, 9.19.1.37, 9.20.3.7, 9.22.1.3CVE-2025-20333Cisco FTD Software7.0, 7.2, 7.4, 7.67.0.8.1, 7.2.9, 7.4.2.4, 7.6.1CVE-2025-20363Cisco ASA Software9.16, 9.18, 9.19, 9.20, 9.22, 9.239.16.4.84, 9.18.4.57, 9.19.1.42, 9.20.3.16, 9.22.2, 9.23.1.3CVE-2025-20363Cisco FTD Software7.0, 7.2, 7.4, 7.6, 7.77.0.8, 7.2.10, 7.4.2.3, 7.6.1, 7.7.10CVE-2025-20362Cisco ASA Software9.16, 9.18, 9.20, 9.22, 9.239.16.4.85, 9.18.4.67, 9.20.4.10, 9.22.2.14, 9.23.1.19CVE-2025-20362Cisco FTD Software7.0, 7.2, 7.4, 7.6, 7.77.0.8.1, 7.2.10.2, 7.4.2.4, 7.6.2.1, 7.7.10.1

Cisco ASA Software:

• Cisco customers on the 9.17 branch must migrate to a fixed release to address CVE-2025-20363
• Cisco customers on the 9.17 and 9.19 branches must migrate to a fixed release to address CVE-2025-20362.

Cisco FTD Software:

• Cisco customers on the 7.1 and 7.3 branches must migrate to a fixed release to address all three vulnerabilities.

Has Tenable released any product coverage for these vulnerabilities?

A list of Tenable plugins for these vulnerabilities can be found on the individual CVE pages as they’re released:

• CVE-2025-20333
• CVE-2025-20362
• CVE-2025-20363

This link will display all available plugins for these vulnerabilities, including upcoming plugins in our Plugins Pipeline.

Additionally, customers can utilize Tenable Attack Surface Management to identify public facing Cisco devices by using the following query:

Change Log

Update September 25: This FAQ blog has been updated to include a reference to an NCSC report on associated malware linked to this campaign.

Get more information

• Cisco Event Response: Continued Attacks Against Cisco Firewalls
• ArcaneDoor - New espionage-focused campaign found targeting perimeter network devices
• CVE-2024-20353, CVE-2024-20359: Frequently Asked Questions About ArcaneDoor

Join Tenable's Research Special Operations (RSO) Team on Tenable Connect and engage with us in the Threat Roundtable group for further discussions on the latest cyber threats.

Learn more about Tenable One, the Exposure Management Platform for the modern attack surface.

Threat Attack Daily - 25th of September 2025

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The post How to Manage Shadow AI Risk Without Killing Innovation appeared first on Security Boulevard.

A vulnerability, which was classified as problematic, was found in Intel PROSet, Wireless Software and Intel Killer Wi-Fi. The impacted element is an unknown function. The manipulation results in denial of service. This vulnerability is reported as CVE-2024-23198. The attacker must have access to the local network to execute the attack. No exploit exists. You should upgrade the affected component.