Vulnerability intelligence

CVE-2026-124194 is a spoofing vulnerability in Microsoft Outlook that stems from the application failing to warn users before performing a potentially unsafe action. To exploit this flaw, an unauthenticated attacker must convince a target to open a specially crafted message file in an affected version of Outlook. The vulnerability cannot be triggered through the Preview Pane alone. Once the malicious file is opened, Outlook is forced to connect to an attacker-controlled network location without displaying the standard external-content warning. This unauthorized connection exposes the victim's NTLMv2 authentication hash to the remote server, allowing the attacker to capture the hash and potentially use it to impersonate the user in subsequent attacks. Discovered by researchers "nono" and Benoît Sevens, the vulnerability was addressed in Microsoft's November 2026 Patch Tuesday updates. Because the flaw has been actively exploited in the wild as a zero-day, the Cybersecurity and Infrastructure Security Agency (CISA) has added it to its Known Exploited Vulnerabilities (KEV) Catalog.

CVE-2026-109618 is a remote code execution (RCE) vulnerability affecting the PHP core. The flaw reportedly impacts a wide range of PHP versions, specifically versions 5, 6, 7, and 8. While specific technical details have been withheld by researchers to prevent exploitation, cybersecurity firm watchTowr confirmed the vulnerability's validity and successfully reproduced it in their testing environment. The vulnerability was originally under embargo for a coordinated disclosure on October 22, 2026, but details of the flaw leaked early on October 20, 2026, via a post on Hacker News. In response to the premature leak, the PHP security team accelerated its release timeline, scheduling emergency security updates for October 21, 2026, to address the issue.

CVE-2026-109619 is a remote code execution (RCE) vulnerability affecting the PHP scripting language. Security researchers and early reports indicate that the flaw impacts PHP versions 5, 6, 7, and 8. While specific technical details regarding the vulnerability's mechanics have not been publicly disclosed, successful exploitation could allow an unauthenticated remote attacker to execute arbitrary code with the privileges of the underlying PHP process. The vulnerability was originally scheduled for coordinated disclosure under embargo on October 22, 2026. However, after information about the flaw leaked online on October 20, the PHP security team accelerated its timeline, scheduling a security release for October 21, 2026, at 14:00 UTC. Security organizations and researchers have advised administrators to prepare to apply the upcoming patches as soon as they are released.

CVE-2026-20320 is an XML External Entity (XXE) injection vulnerability found in the Open Client Interface (OCI) XML Parser of Cisco BroadWorks. The issue stems from the parser improperly handling XML entries because external entity resolution is enabled by default. An unauthenticated, remote attacker can exploit this flaw by sending a specially crafted XML message to the Open Client Interface – Provisioning (OCI-P) service. This allows the attacker to read sensitive configuration information and view files from the filesystem with the privileges of the Cisco BroadWorks user. The vulnerability affects several Cisco BroadWorks products running versions earlier than release RI. 2026.07, including the Application Delivery Platform, Application Server, Profile Server, and Xtended Services Platform. Cisco released patches for the issue in August 2026. In November 2026, the Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-20320 to its Known Exploited Vulnerabilities (KEV) catalog following evidence of active exploitation in the wild.

CVE-2026-125350 is a use-after-free vulnerability in the XML component of Google Chrome and other Chromium-based browsers. The flaw occurs when the browser attempts to access a memory location after it has already been released. A remote attacker can exploit this vulnerability by convincing a user to visit a specially crafted HTML or XML page, which can allow the attacker to execute arbitrary code inside the browser's sandbox, bypass security restrictions, or cause a denial of service. The vulnerability was reported anonymously on November 6, 2026, and Google confirmed shortly after that it has been actively exploited in the wild. In response, Google released emergency updates to address the issue, patching it in Chrome Stable versions 157.0.8103.50/.51 for Windows and macOS, and 157.0.8103.50 for Linux. Additionally, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) added the vulnerability to its Known Exploited Vulnerabilities (KEV) catalog, requiring federal agencies to apply the updates.

CVE-2026-124194 is a spoofing vulnerability in Microsoft Outlook that stems from the application failing to warn users before performing a potentially unsafe action. To exploit this flaw, an unauthenticated attacker must convince a target to open a specially crafted message file in an affected version of Outlook. The vulnerability cannot be triggered through the Preview Pane alone. Once the malicious file is opened, Outlook is forced to connect to an attacker-controlled network location without displaying the standard external-content warning. This unauthorized connection exposes the victim's NTLMv2 authentication hash to the remote server, allowing the attacker to capture the hash and potentially use it to impersonate the user in subsequent attacks. Discovered by researchers "nono" and Benoît Sevens, the vulnerability was addressed in Microsoft's November 2026 Patch Tuesday updates. Because the flaw has been actively exploited in the wild as a zero-day, the Cybersecurity and Infrastructure Security Agency (CISA) has added it to its Known Exploited Vulnerabilities (KEV) Catalog.