Source URL: https://blog.talosintelligence.com/microsoft-patch-tuesday-april-2025/
Source: Cisco Talos Blog
Title: Microsoft Patch Tuesday for April 2025 — Snort rules and prominent vulnerabilities
Feedly Summary: Microsoft has released its monthly security update for April of 2025 which includes 126 vulnerabilities affecting a range of products, including 11 that Microsoft has marked as “critical”.
AI Summary and Description: Yes
Summary: The text discusses Microsoft’s April 2025 security update, detailing 126 vulnerabilities, including 11 marked as critical, primarily concerning remote code execution (RCE) vulnerabilities in various Microsoft products. These vulnerabilities pose significant risks and require prompt action from security professionals.
Detailed Description:
The April 2025 security update from Microsoft addresses an extensive array of vulnerabilities across its products. Below are the major points from the update:
– **Total Vulnerabilities**: 126 identified, with 11 classified as “critical.”
– **Critical Vulnerabilities**: All critical vulnerabilities are RCE types, which can allow attackers to execute arbitrary code on a targeted machine.
– Four critical vulnerabilities are assessed to have “more likely” exploitation potential.
– **Specific Vulnerability Highlights**:
– **CVE-2025-27480 & CVE-2025-27482**: Related to Windows Remote Desktop Services, both RCE vulnerabilities with a CVSS score of 8.1, allow exploitation through race conditions leading to arbitrary code execution.
– **CVE-2025-26663 (LDAP)**: Also a critical RCE vulnerability with a CVSS score of 8.1, can be exploited through malicious LDAP calls.
– **CVE-2025-26670 (LDAP Client)**: Similar function and vulnerability characteristics to the previous LDAP issue.
– **CVE-2025-26686**: An RCE vulnerability in Windows TCP/IP with a CVSS score of 7.5, exploitable via network connections.
– Additional RCE vulnerabilities identified in Microsoft Excel and Office products, all assessed with CVSS scores ranging between 7.1 and 7.8.
– **Exploitation Likelihood**:
– For many critical vulnerabilities, Microsoft determines “attack complexity” as high, suggesting a more strategic approach is necessary for potential exploits, although some vulnerabilities are noted as “less likely” to be exploited.
– **Mitigation Recommendations**:
– Cisco’s Talos has released new Snort rules to detect these vulnerabilities’ exploit attempts. Security professionals are urged to update their Snort rulesets accordingly.
– Recommended rule numbers provided for reference on detection capabilities against these vulnerabilities.
– **Future Releases**: Possible future updates may include additional rules based on further insights into these vulnerabilities.
This information is crucial for security professionals in understanding the current threat landscape related to Microsoft products. Proactive measures should be taken to apply updates and monitor systems for indicators of exploitation attempts.