Security vulnerabilities are a common occurrence in managing any business’s organizational security. The prompt patching and remediation of any new vulnerabilities are critical to reducing the outside attack surface. Netizen’s Security Operations Center (SOC) has compiled five critical vulnerabilities from April that should be immediately patched or addressed if present in your environment. Detailed writeups below:
CVE-2025-29824
CVE-2025-29824 is a high-severity use-after-free vulnerability in the Windows Common Log File System (CLFS) Driver that allows an authorized attacker to elevate privileges locally. This vulnerability was disclosed as part of Microsoft’s April 2025 Patch Tuesday, where the company addressed 121 CVEs, including one zero-day that had already been exploited in the wild.
Exploitation of CVE-2025-29824 could enable attackers to gain higher-level system privileges, providing them with the ability to execute arbitrary code, alter system configurations, or move laterally across a compromised network. Security researchers reported that ransomware gangs have actively exploited this flaw, making it a serious concern for enterprise environments, especially those running unpatched Windows systems.
Given its active exploitation and the significant risk of privilege escalation, organizations are strongly urged to apply the April 2025 security updates without delay. In addition to patching, it is advisable to review system logs for signs of suspicious activity related to CLFS operations and implement endpoint protection solutions capable of detecting post-exploitation behaviors. Addressing this vulnerability promptly is critical to defending against ransomware attacks and broader system compromise.
CVE-2025-22457
CVE-2025-22457 is a critical stack-based buffer overflow vulnerability affecting Ivanti Connect Secure, Ivanti Policy Secure, and Ivanti ZTA Gateways. The flaw exists in Ivanti Connect Secure before version 22.7R2.6, Ivanti Policy Secure before version 22.7R1.4, and Ivanti ZTA Gateways before version 22.8R2.2, and it allows a remote unauthenticated attacker to achieve remote code execution.
This vulnerability has drawn serious concern due to its active exploitation by threat actors, including groups linked to Chinese espionage operations. Security researchers have reported that thousands of Ivanti VPN appliances were left exposed and vulnerable, leading to widespread targeting. Exploitation can result in full control over the affected device, enabling attackers to deploy malware, steal sensitive information, or establish persistent access for further attacks.
Organizations using vulnerable versions of Ivanti products are strongly urged to update immediately to the patched versions released by Ivanti. Delaying remediation could leave critical infrastructure and sensitive networks exposed to sophisticated threat actors. It is also recommended to monitor network traffic for signs of compromise, restrict access to administrative interfaces, and apply strict segmentation and access controls around critical systems to minimize potential impact.
CVE-2025-31200
CVE-2025-31200 is a high-severity memory corruption vulnerability affecting multiple Apple operating systems, including iOS, iPadOS, macOS Sequoia, tvOS, and visionOS. The flaw was caused by improper bounds checking when processing audio streams in maliciously crafted media files. Successful exploitation of this vulnerability could allow an attacker to achieve arbitrary code execution on a target device.
Apple addressed the issue in iOS 18.4.1, iPadOS 18.4.1, macOS Sequoia 15.4.1, tvOS 18.4.1, and visionOS 2.4.1. Reports indicated that the flaw had been exploited in highly sophisticated attacks targeting specific individuals, particularly on iOS devices. Given the nature of the exploitation, it is suspected that the attacks were part of carefully crafted, state-sponsored campaigns aimed at high-value targets.
Due to the potential for serious impact, users and organizations are urged to update their Apple devices to the latest patched versions as soon as possible. Special attention should be given to high-risk users who may be subject to targeted threats. In addition to applying updates, users should exercise caution when handling unknown or suspicious media files, particularly from untrusted sources.
CVE-2024-53150
CVE-2024-53150 is a high-severity vulnerability in the Linux kernel related to the ALSA (Advanced Linux Sound Architecture) USB-audio driver. The issue stems from a lack of proper validation when traversing USB clock descriptors, specifically failing to check the bLength field of each descriptor. This oversight could allow an out-of-bounds read when a device provides a malformed descriptor with a shorter-than-expected length, potentially leading to memory corruption or unexpected behavior.
The vulnerability was resolved by introducing sanity checks during the clock descriptor traversal process. The updated code now verifies that descriptor lengths match the expected sizes before processing, and skips any invalid descriptors. Special attention was given to clock selector descriptors for UAC2 and UAC3 devices, which include dynamic array fields and required additional checks beyond simple size comparisons.
This flaw was highlighted as part of Google’s Android security updates in April 2025, indicating that it had been actively exploited in attacks targeting Android devices. Given its potential for exploitation and the fact that Linux kernel vulnerabilities often impact a wide range of platforms, users and organizations should apply patches that address this vulnerability as soon as they are available. Updating kernel versions, especially for systems running Android or Linux-based distributions that use ALSA drivers, is critical to preventing potential exploitation through malicious USB devices or corrupted media handling.
CVE-2024-53197
CVE-2024-53197 is a high-severity vulnerability affecting the Linux kernel’s USB-audio subsystem, specifically impacting devices like Extigy and Mbox. The issue stems from a scenario where a malicious or faulty USB device provides a bNumConfigurations value that exceeds the amount initially allocated for dev->config during usb_get_configuration. This discrepancy can lead to out-of-bounds accesses later during operations such as usb_destroy_configuration, potentially resulting in memory corruption or system instability.
The vulnerability was addressed by introducing proper validation checks to ensure that configuration values provided by devices do not exceed the allocated memory bounds. This fix was included in kernel patches released in early 2025 and was highlighted as part of the broader Android security updates in April 2025, suggesting that exploitation was observed in real-world attacks targeting Android systems and Linux-based environments.
Given the nature of the flaw and the risks associated with memory corruption vulnerabilities, organizations and users running affected Linux or Android systems should apply the available security patches as soon as possible. Keeping systems updated and being cautious about connecting unknown or untrusted USB devices can help mitigate the risk of exploitation related to this vulnerability.
How Can Netizen Help?
Netizen ensures that security gets built-in and not bolted-on. Providing advanced solutions to protect critical IT infrastructure such as the popular “CISO-as-a-Service” wherein companies can leverage the expertise of executive-level cybersecurity professionals without having to bear the cost of employing them full time.
We also offer compliance support, vulnerability assessments, penetration testing, and more security-related services for businesses of any size and type.
Additionally, Netizen offers an automated and affordable assessment tool that continuously scans systems, websites, applications, and networks to uncover issues. Vulnerability data is then securely analyzed and presented through an easy-to-interpret dashboard to yield actionable risk and compliance information for audiences ranging from IT professionals to executive managers.
Netizen is an ISO 27001:2013 (Information Security Management), ISO 9001:2015, and CMMI V 2.0 Level 3 certified company. We are a proud Service-Disabled Veteran-Owned Small Business that is recognized by the U.S. Department of Labor for hiring and retention of military veterans.
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