WebKit vulnerabilities refer to security flaws in Apple’s web rendering engine, which powers Safari, Mail, and the App Store on iOS and macOS.
What this means is that the CVE-2026-20643 vulnerability makes it possible for a malicious website to pretend to be another site, maybe one you trust, and then read or steal information that should be kept separate. Normally, browsers enforce a rule called the “same‑origin policy,” which is like a strict fence that stops one site from peeking into another site’s data. This bug could help cybercriminals cut through that fence. In practical terms, an attacker would first have to lure you to a specially crafted web page.
Read more…
Source: Malwarebytes Labs
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- SolarWinds Web Help Desk Exploitation – February 2026
February 10, 2026
Multiple intrusions have been publicly reported starting on February 6, 2026 stemming from Internet-connected servers utilizing SolarWinds Web Help Desk software. This exploitation activity reportedly first occurred in December 2025. Given the number of recent CVEs affecting this product, it’s not yet clear which of several CVEs is directly responsible for these campaigns. Below are ...
- Russia-linked APT28 attackers already abusing new Microsoft Office zero-day
February 2, 2026
Russia-linked attackers are already exploiting Microsoft’s latest Office zero-day, with Ukraine’s national cyber defense team warning that the same bug is being used to target government agencies inside the country and organizations across the EU. In an alert published on Sunday, CERT-UA says the activity is being driven by UAC-0001, better known as “APT28” or “Fancy ...
- Ivanti patched two critical zero-day vulnerabilities in EPMM
January 30, 2026
Ivanti has patched two critical zero-day vulnerabilities in its Endpoint Manager Mobile (EPMM) product that are already being exploited, continuing a grim run of January security incidents for enterprise IT vendors. In January 2025, tens of thousands were urged to patch a Fortinet zero-day, while Ivanti customers were doing the same. There has been little change ...
- Microsoft Office zero-day lets malicious documents slip past security checks
January 29, 2026
Microsoft issued an emergency patch for a high-severity zero-day vulnerability in Office that allows attackers to bypass document security checks and is being exploited in the wild via malicious files. Microsoft pushed the emergency patch for the zero‑day, tracked as CVE-2026-21509, and classified it as a “Microsoft Office Security Feature Bypass Vulnerability” with a CVSS score ...
- CISA: Fortinet Releases Guidance to Address Ongoing Exploitation of Authentication Bypass Vulnerability CVE-2026-24858
January 28, 2026
Newly disclosed vulnerability Common Vulnerabilities and Exposures (CVE)-2026-24858 allows malicious actors with a FortiCloud account and a registered device to log in to separate devices registered to other users in FortiOS, FortiManager, FortiWeb, FortiProxy, and FortiAnalyzer, if FortiCloud single sign on (SSO) is ...
- Fortinet admits FortiGate SSO bug still exploitable despite December patch
January 23, 2026
Fortinet has confirmed that attackers are actively bypassing a December patch for a critical FortiCloud single sign-on (SSO) authentication flaw after customers reported suspicious logins on devices supposedly fully up to date. In a new advisory, Fortinet said it had identified a fresh attack path being used to abuse SAML-based SSO in FortiOS, even on systems ...