Adobe Acrobat Chrome extension bug enabled silent WhatsApp data theft
Adobe patched CVE-2026-48294, a flaw in Adobe Acrobat Chrome extension that could let attackers steal WhatsApp Web chats by luring users to a webpage. Guardio Labs researcher Shaked Biner disclosed HermeticReader, a vulnerability chain in the Adobe Acrobat Chrome extension that allowed any attacker-controlled webpage to silently steal a visitor’s WhatsApp chats, contacts, profile name, […]
Guardio Labs researcher Shaked Biner disclosed HermeticReader, a vulnerability chain in the Adobe Acrobat Chrome extension that allowed any attacker-controlled webpage to silently steal a visitor’s WhatsApp chats, contacts, profile name, and message previews in plain text. The extension sits on roughly 329 million browsers. No malware, no phished password, no compromised session cookie — just visiting the wrong page was enough.
“Read the prerequisites list of this exploit chain and the discomfort sets in: no malware is installed, no password is phished, no session cookie is touched. There is no zero-day in WhatsApp.” reads the report published by Guardio Labs. “The attacker needs no Adobe account and no foothold on the machine. Only for the victim to visit a simple attacker-controlled static page.”
Related breach coverage
- Flaw in Adobe Extension With 300M Installs Enabled WhatsApp Data Theft2026-07-22
An attacker only needed to convince the targeted user to visit a malicious website to exfiltrate WhatsApp messages and contacts. The post Flaw in Adobe Extension With 300M Installs Enabled WhatsApp Data Theft appeared first on SecurityWeek.
- Adobe fixed a maximum-severity vulnerability flaw in Campaign Classic2026-08-01
Adobe fixed a maximum severity vulnerability in Campaign Classic that could let attackers run code remotely without user interaction. Adobe has addressed a critical vulnerability, tracked as CVE-2026-48449 (CVSS score of 10.0), in Adobe Campaign Classic, the company’s enterprise marketing automation platform. The flaw is caused by incorrect authorization and could allow attackers to execute […]
- Broadcom Patches Critical VMware ESXi Vulnerability Enabling Host Code Execution2026-07-29
Broadcom patched a critical VMware ESXi VM escape flaw (CVE-2026-47876) that could let attackers run code on the host from a compromised virtual machine. Broadcom has released patches to address five vulnerabilities affecting VMware ESXi, vCenter, Workstation, and Fusion, including three rated critical. The most severe, tracked as CVE-2026-47876 (CVSSv3 base score of 9.3), is a […]
- JetBrains Patches Critical TeamCity Flaw Allowing Server Takeover2026-07-28
JetBrains patched a critical TeamCity flaw (CVE-2026-63077) enabling unauthenticated code execution on affected on-premise servers. JetBrains has released security updates for TeamCity On-Premises after discovering a critical vulnerability, tracked as CVE-2026-63077 (CVSS score of 9.8). The flaw could allow unauthenticated attackers to execute arbitrary commands on affected servers. All on-premise versions are impacted, while TeamCity […]