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RussianTA488 Returns With Persistent Outlook Web Access Attack

Infosecurity Magazineby Alessandro Mascellino ()2 min read1 · 1 read
Analyze CVE-2026-42897 with Vani AIImpact, affected versions, exploitation, mitigations and detection

Vulnerabilities mentioned

All
CVEVulnerabilityCVSSEPSSSignalsPublished
CVE-2026-42897
Cross-Site Scripting in Microsoft Exchange Server Actively Exploited by Laundry Bear
6.171%KEV
KEV

From the original article

2 min read at infosecurity-magazine.com

A Russia-aligned espionage group has resurfaced after months without observed activity, using a half-click exploit against on-premises Outlook Web Access (OWA) to plant a browser-resident implant and establish server-side persistence that can survive credential rotation and device re-imaging.

Infosecurity Magazine

By Alessandro Mascellino · infosecurity-magazine.com

Read the full article at Infosecurity Magazine

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.