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7 vulnerabilities found for Microsoft 365 Copilot's Business Chat by Microsoft
CVE-2026-78501 (GCVE-0-2026-78501)
Vulnerability from cvelistv5 – Published: 2026-09-17 22:55 – Updated: 2026-10-01 22:56 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Microsoft 365 Copilot Business Chat Information Disclosure Vulnerability
Summary
Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 14:11 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot's Business Chat |
Affected:
-
cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:* |
Date Public
2026-09-17 14:00
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CVE-2026-26129 (GCVE-0-2026-26129)
Vulnerability from cvelistv5 – Published: 2026-05-07 20:58 – Updated: 2026-08-10 15:13 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
M365 Copilot Information Disclosure Vulnerability
Summary
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 15:32 UTC
CWE
- CWE-138 - Improper Neutralization of Special Elements
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot's Business Chat |
Affected:
-
cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:* |
Date Public
2026-05-07 14:00
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CVE-2026-26164 (GCVE-0-2026-26164)
Vulnerability from cvelistv5 – Published: 2026-05-07 20:58 – Updated: 2026-08-10 15:13 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
M365 Copilot Information Disclosure Vulnerability
Summary
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 13:51 UTC
CWE
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot's Business Chat |
Affected:
-
cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:* |
Date Public
2026-05-07 14:00
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CVE-2025-59286 (GCVE-0-2025-59286)
Vulnerability from cvelistv5 – Published: 2025-10-09 21:04 – Updated: 2026-02-26 17:47 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Copilot Information Disclosure Vulnerability
Summary
Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to disclose information over a network.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-18 03:55 UTC
CWE
- CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot's Business Chat |
Affected:
-
cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:* |
Date Public
2025-10-09 14:00
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CVE-2025-59272 (GCVE-0-2025-59272)
Vulnerability from cvelistv5 – Published: 2025-10-09 21:04 – Updated: 2026-02-26 17:47 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Copilot Information Disclosure Vulnerability
Summary
Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to perform information disclosure locally.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-18 03:55 UTC
CWE
- CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot's Business Chat |
Affected:
-
cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:* |
Date Public
2025-10-09 14:00
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CVE-2025-53787 (GCVE-0-2025-53787)
Vulnerability from cvelistv5 – Published: 2025-08-07 21:01 – Updated: 2026-02-26 17:49 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Summary
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-13 15:04 UTC
CWE
- CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot's Business Chat |
Affected:
-
cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:* |
Date Public
2025-08-07 07:00
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CVE-2025-53774 (GCVE-0-2025-53774)
Vulnerability from cvelistv5 – Published: 2025-08-07 21:01 – Updated: 2026-02-26 17:49 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Summary
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-13 15:04 UTC
CWE
- CWE-77 - Improper Neutralization of Special Elements used in a Command ('Command Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Copilot's Business Chat |
Affected:
-
cpe:2.3:a:microsoft:365_copilot_business_chat:*:*:*:*:*:*:*:* |
Date Public
2025-08-07 07:00
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