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Defender

45 articles from 12 outlets between 14 Apr and 10 Sep. First reported by SANS ISC. The busiest day was Thu 9 Jul, with 6 articles.

Articles: 45; all time · from 12 outlets
Days covered: 21; of 150 days · all time
Busiest day: 6; articles on Thu 9 Jul
Last 7 days: 0a day; vs 0.2 a day · previous 7 days
First report: 14 Apr; SANS ISC
CVEs tracked: 159; 390 in CISA KEV · all time

Coverage over time

45 articles · 14 Apr – 10 Sep

22 AprAdded to CISA KEV · CVE-2026-33825Defender
20 MayAdded to CISA KEV · CVE-2026-41091Defender
20 MayAdded to CISA KEV · CVE-2026-45498Defender
14 AprFirst report14 Apr · SANS ISC

Show as table

Defender: articles per day
Day (UTC)	Articles	Outlets
Tue 14 Apr	4	SANS ISC 1, SecurityWeek 1, Dark Reading 1, Rapid7 1
Wed 15 Apr	3	Security Affairs 1, Infosecurity 1, Malwarebytes 1
Sun 19 Apr	1	Security Affairs 1
Tue 21 Apr	1	Dark Reading 1
Wed 22 Apr	2	CISA 2
Thu 23 Apr	2	SecurityWeek 1, Security Affairs 1
Fri 15 May	1	Security Affairs 1
Tue 19 May	1	Dark Reading 1
Wed 20 May	5	CISA 5
Thu 21 May	3	SecurityWeek 1, Malwarebytes 1, Security Affairs 1
Tue 9 Jun	1	Security Affairs 1
Wed 17 Jun	1	SecurityWeek 1
Thu 18 Jun	2	Security Affairs 1, Malwarebytes 1
Tue 30 Jun	1	SecurityWeek 1
Wed 1 Jul	1	Security Affairs 1
Thu 9 Jul	6	SecurityWeek 1, SecurityOnline 1, Security Affairs 1, Malwarebytes 1, Ars Technica 1, Dark Reading 1
Wed 12 Aug	2	SecurityOnline 1, Security Affairs 1
Thu 13 Aug	1	SecurityWeek 1
Mon 17 Aug	1	Malwarebytes 1
Wed 9 Sep	3	SecurityOnline 1, Security Affairs 1, The Hacker News 1
Thu 10 Sep	3	SecurityWeek 1, SOCRadar 1, Dark Reading 1

Articles

45 articles

Thu 10 Sep3 articles

16:12
Windows Defender Patch Bypass Exposes SYSTEM Files to AttackersDark Reading
12:49
Public ShieldCrash PoC Claims to Bypass Microsoft Defender FixSOCRadar
07:30
Microsoft Defender Zero Day Bypasses Patches to Expose Windows SystemsSecurityWeek

Wed 9 Sep3 articles

09:29
Microsoft Defender Zero Day Bypasses Patch to Read Windows Files as SYSTEMThe Hacker News
08:50
ShieldCrash PoC Revives Microsoft Defender SYSTEM File Read FlawSecurity Affairs
01:01
Microsoft Defender 0day PoC Exposes SYSTEM Files on WindowsSecurityOnline

Mon 17 Aug1 article

14:21
ShieldBreak bypasses Microsoft’s patch for earlier Defender flawMalwarebytes

Thu 13 Aug1 article

08:51
ShieldBreak exploit hits Microsoft Defender via CVE-2026-50656SecurityWeek

Wed 12 Aug2 articles

08:32
Proof of concept bypasses Defender patch for CVE-2026-50656Security Affairs
06:26
ShieldBreak Exploit Exposes Defender Patch Flaw CVE-2026-50656SecurityOnline

Thu 9 Jul6 articles

21:01
Microsoft patches Windows Defender zero day CVE-2026-50656Dark Reading
21:01
Patch for Windows Defender 0-day could allow attackers to fill hard diskArs Technica
11:47
Microsoft patches zero day EoP flaw in Defender, CVE-2026-50656Malwarebytes
11:46
Microsoft patches Defender bug CVE-2026-50656 after local exploitSecurity Affairs
11:09
Microsoft Patches RoguePlanet Defender Zero-Day That Grants SYSTEM AccessSecurityOnline
11:09
Microsoft patches privilege escalation flaw CVE-2026-50SecurityWeek

Wed 1 Jul1 article

12:26
CISA warns BlueHammer flaw now used in ransomware attacksSecurity Affairs

Tue 30 Jun1 article

14:20
BlueHammer Defender Flaw Linked to Ransomware ExploitsSecurityWeek

Thu 18 Jun2 articles

13:30
Microsoft Defender Bug CVE-2026-50656 Allows Full Windows ControlMalwarebytes
10:30
Microsoft Defender Zero Day Lets Attackers Run SYSTEM CodeSecurity Affairs

Wed 17 Jun1 article

10:10
Microsoft Defender bug CVE-2026-50656 allows admin takeoverSecurityWeek

Tue 9 Jun1 article

23:49
Microsoft patches CVE-2026-41091 amid record 208 CVE updateSecurity Affairs

Thu 21 May3 articles

21:32
CISA Adds Critical Flaws in Windows, Office, Defender to KEV ListSecurity Affairs
18:41
Microsoft Defender vulnerabilities are being exploited in the wildMalwarebytes
10:21
Microsoft fixes two zero day Defender bugs under active attackSecurityWeek

Wed 20 May5 articles

20:13
CISA adds CVE-2026-45498 to KEV, urges Defender patch by JuneCISA · official notice
20:13
CISA warns of active exploit in Microsoft Defender CVE-2026-41091CISA · official notice
19:47
CISA Adds Microsoft Defender DoS Flaw CVE-2026-45498 to KEV ListCISA · official notice
19:45
CISA warns of active exploit in Microsoft Defender CVE-2026-41091CISA · official notice
18:02
CISA adds seven KEV flaws, including 2026 Microsoft Defender bugsCISA · official notice

Tue 19 May1 article

22:01
Windows Zero-Day Barrage Continues After Patch TuesdayDark Reading

Fri 15 May1 article

07:21
Windows Zero Days YellowKey & GreenPlasma Expose BitLocker BypassSecurity Affairs

Thu 23 Apr2 articles

10:30
CISA urges patch Microsoft Defender flaw CVE-2026-33825 by May 6Security Affairs
08:31
Recent Microsoft Defender Vulnerability Exploited as Zero-DaySecurityWeek

Wed 22 Apr2 articles

23:03
CISA adds Microsoft Defender flaw CVE-2026-33825 to KEV listCISA · official notice
22:11
CISA adds Microsoft Defender flaw CVE-2026-33825 to KEV listCISA · official notice

Tue 21 Apr1 article

20:01
Exploits Turn Windows Defender into Attacker ToolDark Reading

Sun 19 Apr1 article

18:13
Microsoft Defender under attack as three zero-days, two of them still unpatched, enable elevated accessSecurity Affairs

Wed 15 Apr3 articles

10:54
April Patch Tuesday patches two Microsoft zero day flawsMalwarebytes
09:57
Microsoft Fixes Two Zero-Days in April Patch TuesdayInfosecurity
06:42
Microsoft fixes SharePoint zero day CVE-2026-32201 in AprilSecurity Affairs

Tue 14 Apr4 articles

22:32
Microsoft patches 167 flaws, including exploited SharePoint bugRapid7
22:00
Privilege Elevation Dominates Massive Microsoft Patch UpdateDark Reading
18:32
Microsoft patches SharePoint zero day CVE-2026-32201 in the wildSecurityWeek
18:31
Microsoft Patch Tuesday April 2026., (Tue, Apr 14th)SANS ISC · first report