HermeticReader - Vulnerability

Threat entity extracted from intelligence sources

Frequency
4
occurrences
First Seen
July 22, 2026
Last Seen
July 22, 2026

HermeticReader is a vulnerability tracked by ThreatCluster, appearing in 1 threat cluster built from 4 intelligence report mentions.

HermeticReader is a vulnerability tracked across 1 threat cluster and 4 intelligence report mentions on ThreatCluster. First observed July 22, 2026; most recent activity July 22, 2026.

Related Threat Clusters

  • Adobe Acrobat Extension Vulnerability Enables WhatsApp Data Theft

    A critical vulnerability in the Adobe Acrobat Chrome extension, tracked as CVE-2026-48294 and named HermeticReader, allows attackers to access WhatsApp Web data without authentication. The flaw affects approximately 329…

    8 articles · Updated July 22, 2026

Recent Intelligence Reports

  • Adobe Acrobat extension vulnerability allowed WhatsApp data theft — Feeds.Feedburner · July 22, 2026
  • Adobe Acrobat extension flaw allowed theft of WhatsApp Web data — Feeds.4Sysops · July 22, 2026
  • Adobe Acrobat Extension Flaw Lets Attackers Steal WhatsApp Chats From 329 Million Users — Cybersecuritynews · July 22, 2026
  • Adobe Chrome extension flaw let sites access private WhatsApp chats — Bleepingcomputer · July 22, 2026

Related Entities

Data Breach Zero-day Exploit Guardio Labs CVE-2026-48294 CWE-200 - Exposure of Sensitive Information CWE-287 - Improper Authentication CWE-78 - OS Command Injection T1041 - Exfiltration Over C2 Channel T1059 - Command and Scripting Interpreter T1567 - Exfiltration Over Web Service Adobe Acrobat Adobe Acrobat Chrome Extension

Frequently asked questions

What is HermeticReader?

HermeticReader is a vulnerability tracked by ThreatCluster, appearing in 1 threat cluster built from 4 intelligence report mentions.

Is HermeticReader still active?

The most recent intelligence report mentioning HermeticReader on ThreatCluster is dated July 22, 2026.

What is HermeticReader associated with?

Across ThreatCluster reporting, HermeticReader most frequently co-occurs with Data Breach, Zero-day Exploit, Guardio Labs, CVE-2026-48294, CWE-200 - Exposure of Sensitive Information, among 12 tracked related entities.

What are the latest developments involving HermeticReader?

The most significant recent cluster is “Adobe Acrobat Extension Vulnerability Enables WhatsApp Data Theft” (8 articles · Updated July 22, 2026). HermeticReader appears across 1 threat cluster in total, listed above with sources.

How much reporting does ThreatCluster have on HermeticReader?

HermeticReader appears in 4 intelligence report mentions across 1 deduplicated threat cluster, aggregated from 17,000+ monitored sources.

CVSS v3.1 Breakdown