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Zombie Microsoft bugs rise from the dead, pave way for crims and ransomware scum

ID: a54b83c3-7920-562c-9008-c7891e1d5203

STIX ID: report--a54b83c3-7920-562c-9008-c7891e1d5203

Feed Name: The Register (Security)

Threat Score
72/100

Date Published: 2026-04-13

Date Updated: 2026-04-26

Author: Jessica Lyons

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CISA added four Microsoft vulnerabilities (including an Exchange deserialization RCE and an old VBA library-loading RCE) and two Adobe flaws to its Known Exploited Vulnerabilities catalog, warning of active exploitation and imposing a federal patching deadline; Microsoft has confirmed at least one of the Exchange issues has been abused in attacks by criminal group Storm-1175, which has been observed gaining access and deploying Medusa ransomware.

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