Vulnerability in Adobe Acrobat Chrome Extension Allowed Theft of WhatsApp Web Conversations
A serious vulnerability in the Adobe Acrobat extension for Chrome allowed malicious web pages to silently extract conversations, contacts, and profile data from active WhatsApp Web sessions.
The flaw, identified as CVE-2026-48294 and dubbed HermeticReader, received a CVSS score of 7.4. It impacted every version of the extension up to 26.5.2.2 and was present in roughly 329 million browser installations.
Exploitation required only that a victim with the extension installed and a logged-in WhatsApp Web session visit an attacker-controlled address. No malware installation, password entry, or file clicks were necessary.
The attack chain leveraged internal pages reachable from the extension together with the absence of message-origin validation. The malicious site altered local storage to activate the Hermes integration feature originally built to connect Acrobat with WhatsApp Web.
By determining the numeric identifier of the open Chrome tab, the attacker could issue commands directly to the Acrobat component loaded inside WhatsApp Web. Visible page elements were manipulated and their rendered content copied into a hidden form that was then submitted to the attacker’s server.
Exposed information included contact names, the full list of conversations, message previews, the user’s profile name, and the complete text of any open chat. End-to-end encryption of the messaging service remained unbroken throughout the process.
Adobe released a fix in version 26.5.2.3, which was distributed automatically via the Chrome Web Store. At the time of disclosure, researchers had found no public indications that the vulnerability had been used in real-world attacks.
Related articles
Attackers Exploit Critical CVE-2026-59310 in VMware vCenter for Persistent Remote Access
A critical vulnerability identified as CVE-2026-59310 in Broadcom VMware vCenter Server is being actively exploited in the wild against internet-exposed instances. The flaw resides in the Syslog server component and enables remote code execution through a path traversal weakness, carrying a CVSS score of 9.8. Attackers have been observed deploying malicious cron jobs and the reverse_ssh tool to establish persistent outbound command-and-control channels since early August 2026. The campaign has impacted 361 unique IP addresses across 47 countries, with notable concentrations in Germany, the United States, Turkey, Iran, and France. Broadcom has released patches under advisory VMSA-2026-0006.1, which also addresses the related CVE-2026-59309, and strongly recommends immediate updates along with network segmentation and log reviews. No workarounds exist, making prompt patching the only effective mitigation.
SAP Releases August Security Update Patching 28 Vulnerabilities Including Critical CVSS 10 Flaw
SAP has issued a broad security update to address multiple critical vulnerabilities that could enable code injection, memory corruption, and privilege escalation across enterprise systems. The August package includes 28 new security notes along with a GitHub advisory and two prior fix updates. The highest-severity issue, CVE-2026-58231, carries a maximum CVSS score of 10 and affects the Data Hub Adapter in SAP Commerce Cloud versions 2211 and 2211-JDK21, allowing remote exploitation without user interaction due to improper authorization. Another critical flaw, CVE-2026-44772 rated 9.9, impacts SAP Manufacturing Integration and Intelligence 15.4 and 15.5, permitting malicious code injection into industrial process monitoring systems. Additional vulnerabilities rated 9.1 and lower cover directory traversal, SQL injection, XSS, XXE, hardcoded credentials, and OS command injection across various corporate components. Administrators are advised to identify affected systems and prioritize installation of the critical patches first.
Zoom Patches Zoomsday Vulnerability Enabling Remote Code Execution in Meetings
Zoom has addressed four vulnerabilities that could allow attackers to compromise meeting participants, including flaws leading to remote code execution without any victim interaction. The most severe issue, CVE-2026-53413, rated 8.3 and nicknamed Zoomsday, resides in the annotation feature used for drawing, highlighting, or adding text during screen sharing. This component processes network data using fixed 128-byte buffers without proper size validation, enabling memory corruption that alters program execution flow. Researchers demonstrated the attack on macOS by silently launching Safari on the victim's machine. The flaws affect Zoom Workplace, Zoom Rooms, Meeting SDK, and VDI clients. Users must update to patched versions such as Workplace 7.1.5 or 7.0.6, and Zoom Rooms or Meeting SDK 7.1.5 to mitigate annotation-related risks. No active exploitation has been observed publicly, yet centralized enterprise deployments require priority updates since attacks can occur during live meetings.
Agent, Scan or Beyond: Modern Methods for Comprehensive Infrastructure Vulnerability Scanning
The eighth installment in the Vulnerability Management for Beginners series explains why traditional scanning approaches no longer cover today's dynamic environments. It details three classic methods—Host Discovery, Pentest, and Audit—alongside agent-based scanning, cloud snapshot techniques, passive traffic analysis, container and SCA tools, and integrations with existing IT systems. The guide stresses that agents from Tenable and Qualys complement but do not replace network scanning, while Orca Security and Wiz pioneered disk snapshot analysis for short-lived cloud instances. It also covers container image scanning with Trivy and Grype before deployment, passive monitoring for OT environments, and the importance of combining multiple data sources to eliminate blind spots. Practical recommendations include scanning frequency by asset type and six post-scan steps for effective remediation.