Vulnerabilitycritical
APT28 Tied to CVE-2026-21513 MSHTML 0-Day Exploited Before Feb 2026 Patch Tuesday
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-21509 | Local Security Feature Bypass in Microsoft Office Under Active Exploitation | 7.8 | 71% | KEV | KEV |
| CVE-2026-21513 | MSHTML Security Feature Bypass in Windows Exploited in the Wild (CVE-2026-21513) | 8.8 | 16% | KEV | KEV |
Indicators of compromise
auto-extracted · verify before use · export allAll| Type | Indicator | Context |
|---|---|---|
| domain | wellnesscaremed.com | said. "The LNK file initiates communication with the domain wellnesscaremed[.]com, which is attributed to APT28 and has been in extensive u |
From the original article
2 min read at thehackernews.com
Ravie Lakshmanan Mar 02, 2026 Vulnerability / Threat Intelligence A recently disclosed security flaw patched by Microsoft may have been exploited by the Russia-linked state-sponsored threat actor known as APT28 , according to new findings from Akamai. The vulnerability in question is CVE-2026-21513 (CVSS score: 8. 8), a high-severity security feature bypass affecting the MSHTML Framework.
By @TheHackersNews · thehackernews.com
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