August brought serious security concerns with critical vulnerabilities in software like WinRAR and SharePoint. These CVEs & Vulnerabilities of August 2025 have the potential to expose you to major risks.

In this blog, we’ll break down the most impactful vulnerabilities discovered this month, why they matter, and what steps you need to take to protect yourself.

1. CVE-2025-8088: Directory Traversal Vulnerability in WinRAR

CVE-2025-8088 is a critical directory traversal vulnerability in the Windows version of WinRAR, allowing attackers to execute arbitrary code by crafting malicious archive files. This flaw has been actively exploited in the wild, particularly by the Russian-aligned threat group RomCom, which has used it to deploy backdoor malware onto targeted systems. 

Overview

Vulnerability Breakdown

CVE-2025-8088 arises from WinRAR’s failure to properly handle pathnames in archives, allowing attackers to exploit alternate data streams (ADS) to perform directory traversal. By embedding malicious files in these streams, attackers can place files in sensitive system directories, such as the Windows Startup folder, enabling automatic execution upon system reboot. This vulnerability affects not only WinRAR but also related components like UnRAR.dll and the portable UnRAR source code.

Impact of Exploitation

If exploited, this vulnerability could lead to:

• Remote Code Execution: Attackers can execute arbitrary code on the affected system.
  
• Persistence: Malicious files placed in startup directories ensure execution upon system reboot.
  
• Data Breach: Potential unauthorized access to sensitive information.
  
• Network Compromise: Further exploitation within the network environment.
  

RomCom has used this vulnerability to deploy backdoors like SnipBot, RustyClaw, and Mythic Agent, targeting sectors such as government, defense, and logistics across Europe and North America.

Mitigation & Patching

Why is this CVE in Our Top Picks of the Month?

CVE-2025-8088 is a high-severity vulnerability with a CVSS score of 8.8, indicating significant risk. The active exploitation by a sophisticated threat group, coupled with the availability of a public exploit, underscores the urgency of addressing this issue. The vulnerability’s impact is compounded by WinRAR’s widespread use and the lack of an auto-update mechanism, requiring manual intervention to mitigate the risk.

Strobes Recommendation

Organizations using WinRAR should immediately upgrade to version 7.13. Additionally, implementing SRP and IFEO can provide an added layer of defense against unauthorized execution. Regular monitoring for signs of exploitation and unauthorized file placements is also recommended to detect and respond to potential incidents promptly.

Bottomline

Directory traversal vulnerability in WinRAR. Active exploitation by the RomCom group. Remote code execution is possible. Device compromise is imminent without mitigation. Patch available in WinRAR 7.13. Immediate update required.

2. CVE-2025-54948: Command Injection Vulnerability in Trend Micro Apex One Management Console

CVE-2025-54948 is a critical command injection vulnerability affecting the on-premise version of Trend Micro Apex One Management Console. This flaw allows unauthenticated remote attackers to upload malicious code and execute arbitrary commands on affected installations, posing significant risks to enterprise environments. The vulnerability has been actively exploited in the wild.

Overview

Vulnerability Breakdown

CVE-2025-54948 arises from improper input validation in the Apex One Management Console, allowing attackers to inject and execute arbitrary OS commands. Exploitation requires network or physical access to the vulnerable system. The flaw has been observed in active attacks, underscoring its severity. 

Impact of Exploitation

If exploited, this vulnerability could lead to:

• Remote Code Execution: Attackers can execute arbitrary commands on the affected system.
  
• System Compromise: Full control over the Apex One Management Console, potentially leading to further network penetration.
  
• Data Breach: Access to sensitive information stored within the console.
  
• Service Disruption: Potential interruption of endpoint protection services.
  

The exploitation of this vulnerability has been linked to the deployment of malware and ransomware in targeted environments.

Mitigation & Patching

Applying the FixTool_Aug2025 disables the Remote Install Agent function temporarily. The Critical Patch restores this functionality and provides a permanent fix.

Why is this CVE in Our Top Picks of the Month?

CVE-2025-54948 is assigned a CVSS v3.1 score of 9.4, indicating a critical severity level. The vulnerability’s active exploitation, combined with the availability of a public exploit and the absence of an auto-update mechanism, necessitates immediate attention. The widespread deployment of Apex One in enterprise environments amplifies the potential impact of this flaw.

Strobes Recommendation

Organizations using Trend Micro Apex One should immediately apply the FixTool_Aug2025 and subsequently the Critical Patch to mitigate this vulnerability. Additionally, restrict access to the Management Console to trusted networks and monitor for signs of exploitation. Assume exposure and initiate forensic investigations if the console has been externally accessible.

Bottomline

Critical OS command injection vulnerability in Trend Micro Apex One Management Console. Active exploitation observed. Remote code execution is possible. Patch available. Immediate action is required.

3. CVE-2025-53767: Azure OpenAI Elevation of Privilege Vulnerability

CVE-2025-53767 is a critical elevation of privilege vulnerability in Azure OpenAI services, identified during Microsoft’s August 2025 Patch Tuesday. This flaw allows unauthenticated attackers to exploit server-side request forgery (SSRF) mechanisms, potentially gaining unauthorized access to sensitive internal resources within the Azure environment.

Overview

Vulnerability Breakdown

CVE-2025-53767 stems from insufficient validation of user-supplied input in Azure OpenAI services, enabling attackers to craft requests that the server processes without proper authorization checks. This flaw, classified under CWE-918, allows attackers to bypass security controls and access internal endpoints, such as the Azure Instance Metadata Service, potentially exposing sensitive information like access tokens. 

Impact of Exploitation

If exploited, this vulnerability could lead to:

• Unauthorized Access: Attackers gaining access to internal Azure resources.
  
• Privilege Escalation: Elevation of privileges within the Azure environment.
  
• Data Exposure: Leakage of sensitive information, including access tokens and credentials.
  
• Potential Lateral Movement: Facilitation of further attacks within the cloud infrastructure.
  

Given the nature of the vulnerability, exploitation could have significant implications for organizations relying on Azure OpenAI services for critical operations.

Mitigation & Patching

Why is this CVE in Our Top Picks of the Month?

CVE-2025-53767 is a high-severity vulnerability with a CVSS score of 10.0, indicating critical risk. The potential for unauthorized access and privilege escalation within Azure OpenAI services makes this flaw particularly concerning. Although no public exploit has been reported, the nature of the vulnerability necessitates immediate attention and remediation. 

Strobes Recommendation

Organizations utilizing Azure OpenAI services should promptly apply the security patches released by Microsoft in August 2025. Additionally, reviewing and tightening network access controls to internal endpoints can help mitigate the risk associated with this vulnerability.

Bottomline

Critical SSRF vulnerability in Azure OpenAI services. Potential for unauthorized access and privilege escalation. Patch available; immediate application recommended. No public exploit reported.

4. CVE-2025-9482: Stack-based Buffer Overflow in Linksys RE Series Range Extenders

CVE-2025-9482 has been flagged as high risk due to its stack-based buffer overflow vulnerability in Linksys RE series range extenders, which leads to potential remote code execution and device compromise with no patch currently available. 

Overview

Vulnerability Breakdown

CVE-2025-9482 exists in the Linksys RE series range extenders due to improper handling of user-supplied input parameters in the /goform/portRangeForwardAdd endpoint. The overflow allows attackers to overwrite adjacent memory, potentially leading to arbitrary code execution.

Key Details:

• No authentication is required to exploit this vulnerability.
  
• Attackers can send crafted HTTP requests to the vulnerable endpoint.
  
• Malicious input can overwrite memory, enabling remote code execution.
  
• The flaw has a high potential for exploitation due to the lack of authentication and the ease of an attack vector.
  

Impact of Exploitation

If exploited, CVE-2025-9482 could result in:

• Remote Code Execution: Attackers can execute arbitrary code on the affected device.
  
• Device Compromise: Full control of the affected device, allowing attackers to perform malicious actions or further network attacks.
  
• Network Disruption: Exploitation can cause network service disruptions, particularly in environments with vulnerable devices.
  
• Data Breach: Attackers can access sensitive data from the compromised device, impacting confidentiality and trust.
  

As the device is often deployed in consumer or enterprise networks, exploitation could lead to lateral movement across internal systems.

Mitigation & Patching

Why is this CVE in Our Top Picks of the Month?

CVE-2025-9482 scores a significant 676 on the Strobes Priority Scale due to its potential for remote code execution with minimal attacker effort.

What Drove the High Score:

• Unauthenticated Exploitation: No need for authentication to exploit this vulnerability.
  
• High Impact: Full device compromise leading to a potential network breach.
  
• Available Exploit: An active public exploit is already available, increasing the likelihood of attacks.
  
• No Vendor Patch: No patch has been released, leaving devices exposed to attacks.
  
• Wide Exposure: Linksys RE series range extenders are common in both consumer and small enterprise networks, increasing the attack surface.
  

Strobes Recommendation

If you’re using a Linksys RE series range extender (RE6250, RE6300, RE6350, RE6500, RE7000, RE9000), immediately isolate affected devices from your network. Employ network segmentation and monitor for exploit attempts. Until a vendor patch is available, assume exposure and treat the devices as compromised.

Bottomline

Stack-based buffer overflow in Linksys RE range extenders. Active exploit with no patch. Remote code execution is possible. Device compromise is imminent without mitigation.

5. CVE-2025-49712: Remote Code Execution via Deserialization in Microsoft SharePoint

CVE-2025-49712 is a high-severity vulnerability in Microsoft SharePoint that allows authenticated attackers to execute arbitrary code remotely through improper deserialization of untrusted data. This flaw was disclosed as part of Microsoft’s August 2025 Patch Tuesday updates.

Overview

Vulnerability Breakdown

CVE-2025-49712 arises from SharePoint’s failure to properly validate data during deserialization processes. An authenticated attacker with Site Owner privileges can exploit this vulnerability to inject malicious code, leading to remote code execution on the affected SharePoint server. 

Impact of Exploitation

If exploited, this vulnerability could lead to:

• Remote Code Execution: Attackers can execute arbitrary code on the affected SharePoint server.
  
• Privilege Escalation: Gain elevated privileges within the SharePoint environment.
  
• Data Compromise: Access to sensitive information stored within SharePoint.
  
• Network Propagation: Potential to move laterally within the network from the compromised server.
  

Given SharePoint’s role in enterprise collaboration, exploitation could have widespread organizational impacts.

Mitigation & Patching

Why is this CVE in Our Top Picks of the Month?

CVE-2025-49712 has a CVSS score of 8.8, indicating high severity. The vulnerability’s impact is significant due to the potential for remote code execution and the critical role of SharePoint in organizational operations. While no public exploit has been reported, the existence of a patch underscores the importance of timely remediation.

Strobes Recommendation

Organizations utilizing affected versions of SharePoint should prioritize applying the security updates provided in the August 2025 Patch Tuesday. Additionally, reviewing and restricting Site Owner privileges can further mitigate the risk. Regular monitoring of SharePoint logs for anomalous activities is also recommended to detect potential exploitation attempts.

Bottomline

Deserialization vulnerability in Microsoft SharePoint. Remote code execution is possible. Patch available in August 2025 updates. Apply updates promptly to mitigate risks.

6. CVE-2025-53766: Heap-Based Buffer Overflow in Windows GDI+

CVE-2025-53766 is a critical heap-based buffer overflow vulnerability in Windows GDI+ that allows unauthenticated remote attackers to execute arbitrary code over a network connection without user interaction. This vulnerability was disclosed in August 2025 and affects various versions of Microsoft Windows, including Windows Server editions and Windows 10 through Windows 11.

Overview

Vulnerability Breakdown

CVE-2025-53766 arises from a heap-based buffer overflow in Windows GDI+, which can be triggered by processing specially crafted metafiles embedded in documents. An attacker can exploit this vulnerability by convincing a user to download and open a malicious document, leading to remote code execution without requiring user interaction. Notably, the Preview Pane is not an attack vector for this vulnerability. 

Impact of Exploitation

If exploited, this vulnerability could lead to:

• Remote Code Execution: Attackers can execute arbitrary code on the affected system.
  
• System Compromise: Full control over the affected system, allowing for further malicious activities.
  
• Data Breach: Potential unauthorized access to sensitive information.
  
• Network Propagation: Exploitation can facilitate lateral movement within the network.
  

Given the critical nature of this vulnerability, it poses significant risks to the confidentiality, integrity, and availability of affected systems.

Mitigation & Patching

Why is this CVE in Our Top Picks of the Month?

CVE-2025-53766 is a high-severity vulnerability with a CVSS score of 9.8, indicating its critical nature. The potential for remote code execution without user interaction makes it particularly dangerous. Although there are no known public exploits, the widespread use of the affected components and the severity of the vulnerability necessitate prompt remediation. The Strobes Priority Score of 588 reflects its significant risk profile.

Strobes Recommendation

Organizations should immediately apply the security update provided by Microsoft to mitigate the risks associated with CVE-2025-53766. Regularly updating systems and implementing security best practices are essential to protect against such vulnerabilities. Given the critical nature of this vulnerability, it is advisable to treat affected systems as compromised until the patch is applied and the system is verified to be secure.

Bottomline

Heap-based buffer overflow in Windows GDI+. Remote code execution is possible without user interaction. Patch available in August 2025. Immediate update required

The post Top CVEs & Vulnerabilities of August 2025- Risks, Impacts & Fixes appeared first on Strobes Security.

*** This is a Security Bloggers Network syndicated blog from Strobes Security authored by Shubham Jha. Read the original post at: https://strobes.co/blog/top-cves-vulnerabilities-of-august-2025/