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CVE-2026-26129

🗓️ 07 May 2026 20:58:24Reported by microsoftType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 73 Views

CVE-2026-26129 affects Microsoft 365 Copilot and causes information disclosure.

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-26129
7 May 202620:58
–attackerkb
bdu_fstec
BDU FSTEC
Business Chat Function Microsoft 365 Copilot Unauthorized Access
12 May 202600:00
–bdu_fstec
circl
Circl
CVE-2026-26129
7 May 202623:09
–circl
cnnvd
CNNVD
Microsoft 365 Copilot Business Chat 安全漏洞
7 May 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-26129 M365 Copilot Information Disclosure Vulnerability
7 May 202620:58
–cvelist
euvd
EUVD
EUVD-2026-28445
8 May 202600:31
–euvd
kaspersky
Kaspersky
KLA91032 OSI vulnerabilities in Microsoft Apps
7 May 202600:00
–kaspersky
mscve
Microsoft CVE
M365 Copilot Information Disclosure Vulnerability
7 May 202614:00
–mscve
nvd
NVD
CVE-2026-26129
7 May 202622:16
–nvd
ptsecurity
Positive Technologies
PT-2026-38574
7 May 202600:00
–ptsecurity
Rows per page
NVD
CNA
[
  {
    "vendor": "Microsoft",
    "product": "Microsoft 365 Copilot's Business Chat",
    "versions": [
      {
        "version": "-",
        "status": "affected"
      }
    ]
  }
]

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10 Aug 2026 15:13Current
7.2High risk
Vulners AI Score7.2
CVSS 3.17.5
EPSS0.01027
SSVC
73