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CISA orders feds to patch BlueHammer flaw exploited as zero-day

BACKGROUND
1 SIGNALFIRST DETECTED 23 April 2026
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How the story developed
23 Apr
8.3
Other feeds and industry voices
29 Apr
CISA orders feds to patch Windows flaw exploited as zero-day

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has ordered federal agencies to secure their Windows systems against a vulnerability exploited in zero-day

REPORT · HOW · BleepingComputerOPEN STORY
30 Jun
CISA: Windows BlueHammer flaw now exploited by ransomware gangs

CISA confirmed on Monday that ransomware gangs are now exploiting a Microsoft Defender privilege escalation vulnerability, dubbed BlueHammer, that has previously been abused in

REPORT · WHAT · BleepingComputerOPEN STORY
8 Apr
CISA orders feds to patch exploited Ivanti EPMM flaw by Sunday

CISA has given U.S. government agencies four days to secure their systems against a critical-severity vulnerability in Ivanti Endpoint Manager Mobile (EPMM) that has been

REPORT · HOW · BleepingComputerOPEN STORY
17 Jul
CISA urges immediate action on actively exploited Fortinet flaws

CISA on Thursday ordered government agencies to prioritize patching two actively exploited vulnerabilities in the Fortinet FortiSandbox threat detection platform. [...]

REPORT · WHAT · BleepingComputerOPEN STORY
24 Aug
CISA orders urgent patching of actively exploited Zimbra flaw

The Cybersecurity and Infrastructure Security Agency (CISA) has ordered U.S. government agencies to patch an actively exploited vulnerability in Zimbra Collaboration Suite (ZCS)

REPORT · HOW · BleepingComputerOPEN STORY
14 Oct
CISA warns admins to immediately fix Ivanti flaw exploited as zero-day

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) urged security teams to immediately patch an Ivanti Connect Secure (ICS) flaw exploited in zero-day attacks since

REPORT · HOW · BleepingComputerOPEN STORY
11 Jun
CISA tells govt agencies to patch critical exploited flaws in 3 days

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) announced a new Binding Operational Directive, 26-04, that prioritizes security updates for Federal Civilian

REPORT · HOW · BleepingComputerOPEN STORY
16 Jul
CISA orders feds to patch actively exploited Oracle flaw by Saturday

CISA has ordered federal agencies to secure their systems by Saturday against ongoing attacks exploiting a critical vulnerability in the Oracle E-Business Suite financial

REPORT · HOW · BleepingComputerOPEN STORY
Sources
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