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47 vulnerabilities by n-able
CVE-2026-86218 (GCVE-0-2026-86218)
Vulnerability from nvd – Published: 2026-09-06 02:15 – Updated: 2026-09-09 04:25Title
pre-authentication remote code execution
Summary
N-central is vulnerable to a pre-auth remote code execution This issue affects N-central: before 2026.3.1.14.
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-07 00:00 UTC
CWE
- CWE-96 - Improper neutralization of directives in statically saved code ('static code injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
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CVE-2026-86206 (GCVE-0-2026-86206)
Vulnerability from nvd – Published: 2026-09-05 19:17 – Updated: 2026-09-08 10:35Title
Access control filter bypass allows unauthorised access to APIs
Summary
A vulnerability in the N-central internal API access control filter allows unauthorised access to internal APIs. This is fixed in N-central 2026.3 HF3 and 2026.4
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 10:29 UTC
CWE
- CWE-791 - Incomplete filtering of special elements
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://documentation.n-able.com/N-central/Releas… | release-notes |
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
Impacted products
Date Public
2026-09-05 19:16
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CVE-2026-86207 (GCVE-0-2026-86207)
Vulnerability from nvd – Published: 2026-09-05 19:12 – Updated: 2026-09-08 15:18Title
Authentication bypass leads to unauthorised access to N-central
Summary
An authentication bypass in N-central < 2026.3 HF 3 leads to authentication bypass in internal only APIs
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:18 UTC
CWE
- CWE-305 - Authentication bypass by primary weakness
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://documentation.n-able.com/N-central/Releas… | release-notes |
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
Impacted products
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CVE-2026-15580 (GCVE-0-2026-15580)
Vulnerability from nvd – Published: 2026-08-21 14:00 – Updated: 2026-08-21 15:07
VLAI
EPSS
VEX
Title
PassPortal browser extension: vault token disclosure via unvalidated postMessage
Summary
vault token disclosure via unvalidated postMessage vulnerability in N-able PassPortal allows Authentication Abuse.
This issue affects the PassPortal browser extension: before 3.49.6.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 15:07 UTC
CWE
- CWE-1385 - Missing origin validation in WebSockets
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| N-able | PassPortal |
Affected:
0 , < 3.49.6
(custom)
|
Date Public
2026-08-21 13:56
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CVE-2026-18577 (GCVE-0-2026-18577)
Vulnerability from nvd – Published: 2026-08-02 22:06 – Updated: 2026-08-04 13:32Title
Incomplete patch leads to administrative account takeover
Summary
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 03:56 UTC
CWE
- CWE-288 - Authentication bypass using an alternate path or channel
Assigner
References
5 references
Impacted products
Date Public
2026-08-02 21:44
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CVE-2026-18556 (GCVE-0-2026-18556)
Vulnerability from nvd – Published: 2026-08-01 19:59 – Updated: 2026-08-05 03:56Title
Unauthenticated administrative account takeover
Summary
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.
This issue affects N-central: through 2026.1.
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 00:00 UTC
CWE
- CWE-288 - Authentication bypass using an alternate path or channel
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://uptime.n-able.com/ | |
| https://www.n-able.com/blog/n-central-security-up… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2026-08-01 19:56
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CVE-2025-9316 (GCVE-0-2025-9316)
Vulnerability from nvd – Published: 2025-11-12 15:27 – Updated: 2025-11-12 18:26Title
N-central unauthenticated sessionID generation
Summary
N-central < 2025.4 can generate sessionIDs for unauthenticated users
This issue affects N-central: before 2025.4.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 18:26 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
Date Public
2025-11-12 15:24
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CVE-2025-11700 (GCVE-0-2025-11700)
Vulnerability from nvd – Published: 2025-11-12 15:30 – Updated: 2025-12-15 14:22
VLAI
EPSS
VEX
Title
N-central Multiple XXE Injection Vulnerabilities
Summary
N-central versions < 2025.4 are vulnerable to multiple XML External Entities injection leading to information disclosure
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 18:25 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
1 reference
Date Public
2025-11-12 15:28
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CVE-2025-11367 (GCVE-0-2025-11367)
Vulnerability from nvd – Published: 2025-11-12 15:34 – Updated: 2026-02-26 16:57
VLAI
EPSS
VEX
Title
N-central windows software probe Remote Code Execution
Summary
The N-central Software Probe < 2025.4 is vulnerable to Remote Code Execution via deserialization
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-14 04:55 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
Date Public
2025-11-12 15:34
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CVE-2025-11366 (GCVE-0-2025-11366)
Vulnerability from nvd – Published: 2025-11-12 15:33 – Updated: 2025-11-12 17:24
VLAI
EPSS
VEX
Title
N-central Authentication bypass via path traversal
Summary
N-central < 2025.4 is vulnerable to authentication bypass via path traversal
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 17:24 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
Date Public
2025-11-12 15:33
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CVE-2025-10231 (GCVE-0-2025-10231)
Vulnerability from nvd – Published: 2025-09-10 13:34 – Updated: 2026-02-26 17:48
VLAI
EPSS
VEX
Title
N-central Incorrect Default Permissions could lead to Privilege Escalation
Summary
An Incorrect File Handling Permission bug exists on the N-central Windows Agent and Probe that, in the right circumstances, can allow a local low-level user to run commands with elevated permissions.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-11 03:56 UTC
CWE
- CWE-276 - Incorrect Default Permissions
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://documentation.n-able.com/N-central/Releas… | release-notes |
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
Date Public
2025-09-10 13:14
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CVE-2025-7051 (GCVE-0-2025-7051)
Vulnerability from nvd – Published: 2025-08-21 17:34 – Updated: 2026-02-26 17:48
VLAI
EPSS
VEX
Title
N-central Syslog Configuration Insecure Direct Object Reference
Summary
On N-central, it is possible for any authenticated user to read, write and modify syslog configuration across customers on an N-central server. This vulnerability is present in all deployments of N-central prior to 2025.2.
Severity
8.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-22 03:55 UTC
CWE
Assigner
References
1 reference
Impacted products
Date Public
2025-08-21 17:16
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CVE-2025-8876 (GCVE-0-2025-8876)
Vulnerability from nvd – Published: 2025-08-14 14:53 – Updated: 2025-10-21 22:45Title
Command Injection Vulnerability
Summary
Improper Input Validation vulnerability in N-able N-central allows OS Command Injection.This issue affects N-central: before 2025.3.1.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-14 15:23 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://status.n-able.com/2025/08/13/announcing-t… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2025-08-13 08:00
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CVE-2025-8875 (GCVE-0-2025-8875)
Vulnerability from nvd – Published: 2025-08-14 14:56 – Updated: 2025-10-21 22:45Title
Insecure Deserialization Vulnerability
Summary
Deserialization of Untrusted Data vulnerability in N-able N-central allows Local Execution of Code.This issue affects N-central: before 2025.3.1.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-14 15:23 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://status.n-able.com/2025/08/13/announcing-t… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2025-08-13 08:00
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CVE-2024-8510 (GCVE-0-2024-8510)
Vulnerability from nvd – Published: 2025-03-17 19:01 – Updated: 2025-03-18 14:41
VLAI
EPSS
VEX
Title
N-central Path Traversal
Summary
N-central is vulnerable to a path traversal that allows unintended access to the Apache Tomcat WEB-INF directory. Customer data is not exposed.
This vulnerability is present in all deployments of N-central prior to N-central 2024.6.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-18 14:41 UTC
CWE
Assigner
References
Date Public
2025-03-17 19:00
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CVE-2026-86218 (GCVE-0-2026-86218)
Vulnerability from cvelistv5 – Published: 2026-09-06 02:15 – Updated: 2026-09-09 04:25Title
pre-authentication remote code execution
Summary
N-central is vulnerable to a pre-auth remote code execution This issue affects N-central: before 2026.3.1.14.
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-07 00:00 UTC
CWE
- CWE-96 - Improper neutralization of directives in statically saved code ('static code injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
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CVE-2026-86206 (GCVE-0-2026-86206)
Vulnerability from cvelistv5 – Published: 2026-09-05 19:17 – Updated: 2026-09-08 10:35Title
Access control filter bypass allows unauthorised access to APIs
Summary
A vulnerability in the N-central internal API access control filter allows unauthorised access to internal APIs. This is fixed in N-central 2026.3 HF3 and 2026.4
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 10:29 UTC
CWE
- CWE-791 - Incomplete filtering of special elements
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://documentation.n-able.com/N-central/Releas… | release-notes |
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
Impacted products
Date Public
2026-09-05 19:16
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CVE-2026-86207 (GCVE-0-2026-86207)
Vulnerability from cvelistv5 – Published: 2026-09-05 19:12 – Updated: 2026-09-08 15:18Title
Authentication bypass leads to unauthorised access to N-central
Summary
An authentication bypass in N-central < 2026.3 HF 3 leads to authentication bypass in internal only APIs
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:18 UTC
CWE
- CWE-305 - Authentication bypass by primary weakness
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://documentation.n-able.com/N-central/Releas… | release-notes |
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
Impacted products
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CVE-2026-15580 (GCVE-0-2026-15580)
Vulnerability from cvelistv5 – Published: 2026-08-21 14:00 – Updated: 2026-08-21 15:07
VLAI
EPSS
VEX
Title
PassPortal browser extension: vault token disclosure via unvalidated postMessage
Summary
vault token disclosure via unvalidated postMessage vulnerability in N-able PassPortal allows Authentication Abuse.
This issue affects the PassPortal browser extension: before 3.49.6.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 15:07 UTC
CWE
- CWE-1385 - Missing origin validation in WebSockets
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| N-able | PassPortal |
Affected:
0 , < 3.49.6
(custom)
|
Date Public
2026-08-21 13:56
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CVE-2026-18577 (GCVE-0-2026-18577)
Vulnerability from cvelistv5 – Published: 2026-08-02 22:06 – Updated: 2026-08-04 13:32Title
Incomplete patch leads to administrative account takeover
Summary
An incomplete patch for CVE-2026-18556 allows for authentication bypass and account takeover in N-central Versions through 2026.3.1
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 03:56 UTC
CWE
- CWE-288 - Authentication bypass using an alternate path or channel
Assigner
References
5 references
Impacted products
Date Public
2026-08-02 21:44
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CVE-2026-18556 (GCVE-0-2026-18556)
Vulnerability from cvelistv5 – Published: 2026-08-01 19:59 – Updated: 2026-08-05 03:56Title
Unauthenticated administrative account takeover
Summary
Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.
This issue affects N-central: through 2026.1.
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 00:00 UTC
CWE
- CWE-288 - Authentication bypass using an alternate path or channel
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://uptime.n-able.com/ | |
| https://www.n-able.com/blog/n-central-security-up… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2026-08-01 19:56
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CVE-2025-11367 (GCVE-0-2025-11367)
Vulnerability from cvelistv5 – Published: 2025-11-12 15:34 – Updated: 2026-02-26 16:57
VLAI
EPSS
VEX
Title
N-central windows software probe Remote Code Execution
Summary
The N-central Software Probe < 2025.4 is vulnerable to Remote Code Execution via deserialization
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-14 04:55 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
Date Public
2025-11-12 15:34
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CVE-2025-11366 (GCVE-0-2025-11366)
Vulnerability from cvelistv5 – Published: 2025-11-12 15:33 – Updated: 2025-11-12 17:24
VLAI
EPSS
VEX
Title
N-central Authentication bypass via path traversal
Summary
N-central < 2025.4 is vulnerable to authentication bypass via path traversal
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 17:24 UTC
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
1 reference
Date Public
2025-11-12 15:33
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CVE-2025-11700 (GCVE-0-2025-11700)
Vulnerability from cvelistv5 – Published: 2025-11-12 15:30 – Updated: 2025-12-15 14:22
VLAI
EPSS
VEX
Title
N-central Multiple XXE Injection Vulnerabilities
Summary
N-central versions < 2025.4 are vulnerable to multiple XML External Entities injection leading to information disclosure
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 18:25 UTC
CWE
- CWE-611 - Improper Restriction of XML External Entity Reference
Assigner
References
1 reference
Date Public
2025-11-12 15:28
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CVE-2025-9316 (GCVE-0-2025-9316)
Vulnerability from cvelistv5 – Published: 2025-11-12 15:27 – Updated: 2025-11-12 18:26Title
N-central unauthenticated sessionID generation
Summary
N-central < 2025.4 can generate sessionIDs for unauthenticated users
This issue affects N-central: before 2025.4.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 18:26 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
Date Public
2025-11-12 15:24
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CVE-2025-10231 (GCVE-0-2025-10231)
Vulnerability from cvelistv5 – Published: 2025-09-10 13:34 – Updated: 2026-02-26 17:48
VLAI
EPSS
VEX
Title
N-central Incorrect Default Permissions could lead to Privilege Escalation
Summary
An Incorrect File Handling Permission bug exists on the N-central Windows Agent and Probe that, in the right circumstances, can allow a local low-level user to run commands with elevated permissions.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-11 03:56 UTC
CWE
- CWE-276 - Incorrect Default Permissions
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://documentation.n-able.com/N-central/Releas… | release-notes |
| https://me.n-able.com/s/security-advisory/aArVy00… | vendor-advisory |
Date Public
2025-09-10 13:14
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CVE-2025-7051 (GCVE-0-2025-7051)
Vulnerability from cvelistv5 – Published: 2025-08-21 17:34 – Updated: 2026-02-26 17:48
VLAI
EPSS
VEX
Title
N-central Syslog Configuration Insecure Direct Object Reference
Summary
On N-central, it is possible for any authenticated user to read, write and modify syslog configuration across customers on an N-central server. This vulnerability is present in all deployments of N-central prior to 2025.2.
Severity
8.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-22 03:55 UTC
CWE
Assigner
References
1 reference
Impacted products
Date Public
2025-08-21 17:16
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CVE-2025-8875 (GCVE-0-2025-8875)
Vulnerability from cvelistv5 – Published: 2025-08-14 14:56 – Updated: 2025-10-21 22:45Title
Insecure Deserialization Vulnerability
Summary
Deserialization of Untrusted Data vulnerability in N-able N-central allows Local Execution of Code.This issue affects N-central: before 2025.3.1.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-14 15:23 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://status.n-able.com/2025/08/13/announcing-t… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2025-08-13 08:00
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CVE-2025-8876 (GCVE-0-2025-8876)
Vulnerability from cvelistv5 – Published: 2025-08-14 14:53 – Updated: 2025-10-21 22:45Title
Command Injection Vulnerability
Summary
Improper Input Validation vulnerability in N-able N-central allows OS Command Injection.This issue affects N-central: before 2025.3.1.
Severity
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-14 15:23 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://status.n-able.com/2025/08/13/announcing-t… | |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Date Public
2025-08-13 08:00
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GCVE-128-2026-0001 (CVE-2025-68624)
Vulnerability from gna-128 – Published: 2026-08-31 00:00 – Updated: 2026-08-31 00:00
VLAI
EPSS
VEX
Title
Cross-Tenant Authentication Bypass by Spoofing in N-able Mail Assure
Summary
N-able Mail Assure through 2025-12-09 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server accepts arbitrary sender domains without enforcing any domain-to-account binding. As a result, an attacker from any tenant can impersonate other tenant domains, producing messages that pass SPF and DMARC validation, including strict p=reject policies. NOTE: the Supplier disputes this, stating that the reported behavior is intended functionality of its shared SMTP relay service. On 5 May 2026 the MITRE TL-Root, acting as adjudicator under the CVE Record Dispute Policy, determined that the issue meets the criteria for CVE assignment and instructed the MITRE CNA-LR to assign and publish CVE-2025-68624 with the DISPUTED tag. As of the publication date of this GCVE record, CVE-2025-68624 remains in RESERVED state and no CVE Record has been published. This GCVE record is published by GNA 128 (bcsec) to make the vulnerability information publicly available and citable in the meantime. The CVSS 4.0 assessment published in this record uses Attack Requirements: Present (AT:P), applying the Supplier's own stated precondition that the impersonated domain must be an independently onboarded and DNS-verified customer of the platform. That precondition is trivially satisfied in practice, because platform customers can be enumerated from public DNS records. Privileges Required is Low, since valid credentials for any tenant on the shared relay are sufficient. The integrity impact is rated High on both the vulnerable system and the subsequent system, because the sender identity asserted by the relay can be forged at will and the resulting message passes SPF and DMARC validation at the receiving side. Discovery and verification: the finders are customers of the platform and hold a legitimate tenant, and the issue was identified in the course of using the product. Third-party tenants were identified from public DNS records showing that their mail is routed through the platform. Using the finders' own authenticated tenant credentials, test messages were submitted with MAIL FROM addresses belonging to those third-party domains and were delivered to a mailbox hosted on an unrelated provider (Microsoft 365), where they passed SPF and DMARC evaluation at the receiving side. Mail Assure is a hosted multi-tenant service without customer-visible version numbering, so no fixed version boundary can be stated. No further verification testing was carried out after 29 April 2026, when the Supplier confirmed in the dispute correspondence that an authenticated user of one tenant can submit mail using a MAIL FROM address belonging to another tenant's verified domain, and stated that this is intended functionality. The behaviour itself is therefore not in dispute between the parties, only its classification, and on that basis all versions of the service are recorded as affected with no fix known as of the publication date of this record.
Severity
CWE
- CWE-290 - Authentication Bypass by Spoofing
References
4 references
| URL | Tags |
|---|---|
| https://seclists.org/fulldisclosure/2026/Jun/10 | third-party-advisory |
| https://gist.github.com/alessandrobertoldi/1ebe0f… | third-party-advisory |
| https://deepsec.net/speaker.html#PSLOT782 | media-coverage |
| https://bcsec.io/vulnerability-disclosure-policy.html | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| N-able | Mail Assure |
Affected:
0
(custom)
|
Relationships
- equal GCVE-0-2025-68624
- equal CVE-2025-68624
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"cweId": "CWE-290",
"description": "CWE-290 Authentication Bypass by Spoofing",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "f067779a-4f52-4938-9371-21316297cc51",
"shortName": "bcsec"
},
"references": [
{
"name": "Full Disclosure advisory, 15 June 2026",
"tags": [
"third-party-advisory"
],
"url": "https://seclists.org/fulldisclosure/2026/Jun/10"
},
{
"name": "Public reference advisory, 6 May 2026",
"tags": [
"third-party-advisory"
],
"url": "https://gist.github.com/alessandrobertoldi/1ebe0f48aa0119d787ac0ff710057d92"
},
{
"name": "DeepSec Vienna 2025 presentation",
"tags": [
"media-coverage"
],
"url": "https://deepsec.net/speaker.html#PSLOT782"
},
{
"name": "bcsec vulnerability disclosure policy",
"tags": [
"vendor-advisory"
],
"url": "https://bcsec.io/vulnerability-disclosure-policy.html"
}
],
"solutions": [
{
"lang": "en",
"value": "Enforce a domain-to-account binding at message submission: restrict the domains usable in the SMTP MAIL FROM to those associated with the authenticated account, instead of accepting any domain that is active on the shared platform. This is a change that only the Supplier can make."
}
],
"source": {
"discovery": "USER"
},
"timeline": [
{
"lang": "en",
"time": "2025-08-26T00:00:00.000Z",
"value": "Reported to N-able PSIRT (ticket REQ 6678)."
},
{
"lang": "en",
"time": "2025-11-21T13:00:00.000Z",
"value": "Research publicly presented at DeepSec Vienna 2025, 21 November 2025 at 14:00 local time, in the talk \"Infinity Day at Scale: Hijacking Registrars, Defeating 2FA and Spoofing 17,000+ Domains Even with DMARC\" by Alessandro Bertoldi (Bertoldi Cybersecurity / Independent Security Researcher)."
},
{
"lang": "en",
"time": "2025-12-09T00:00:00.000Z",
"value": "CVE ID request submitted to MITRE (CVE service request 1964945)."
},
{
"lang": "en",
"time": "2026-01-27T00:00:00.000Z",
"value": "The CVE Program initiated the CVE Record Dispute Policy procedure and asked the N-able CNA for its rationale for not assigning a CVE ID, under CVE Program Rules 4.1."
},
{
"lang": "en",
"time": "2026-01-30T00:00:00.000Z",
"value": "N-able declined to assign a CVE ID, stating that the reported behaviour is intended functionality of its shared SMTP relay service."
},
{
"lang": "en",
"time": "2026-05-05T00:00:00.000Z",
"value": "MITRE TL-Root determination: the issue meets the criteria for CVE assignment; the MITRE CNA-LR is instructed to assign and publish CVE-2025-68624 with the DISPUTED tag. The determination states that the CVE Team still needs a publicly available reference URL before publishing the record."
},
{
"lang": "en",
"time": "2026-05-06T00:00:00.000Z",
"value": "First public reference provided to the CVE Team (GitHub Gist), the day after the determination."
},
{
"lang": "en",
"time": "2026-06-15T00:00:00.000Z",
"value": "Advisory published on the Full Disclosure mailing list, one of the hosting resources named as acceptable in the determination of 5 May 2026."
},
{
"lang": "en",
"time": "2026-07-07T00:00:00.000Z",
"value": "CVE service request 1964945 was closed by the CVE Team for lack of a response, with an invitation to submit a notification of CVE publication request together with the reference URL."
},
{
"lang": "en",
"time": "2026-08-31T00:00:00.000Z",
"value": "CVE-2025-68624 still in RESERVED state and no CVE Record published; this GCVE record published by GNA 128 (bcsec)."
}
],
"title": "Cross-Tenant Authentication Bypass by Spoofing in N-able Mail Assure",
"workarounds": [
{
"lang": "en",
"value": "No effective mitigation is available to the domain owner. Hardening DMARC does not help: under RFC 7489 a message passes DMARC when at least one of SPF or DKIM passes with identifier alignment, and the shared relay IP ranges remain authorised in the domain owner\u0027s SPF record, so a message submitted from inside the platform still achieves SPF alignment. This was tested by the finders, including DKIM signing performed on the domain owner\u0027s own infrastructure rather than on the platform, and with a DMARC policy set to adkim=s: the domain remained spoofable. The exposure is therefore removed only by the Supplier-side change described in the solution."
}
],
"x_gcve": [
{
"recordType": "advisory",
"relationships": [
{
"destId": "GCVE-0-2025-68624",
"type": "equal"
},
{
"destId": "CVE-2025-68624",
"type": "equal"
}
],
"vulnId": "GCVE-128-2026-0001"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "f067779a-4f52-4938-9371-21316297cc51",
"assignerShortName": "bcsec",
"cveId": "CVE-2025-68624",
"datePublished": "2026-08-31T00:00:00.000Z",
"dateReserved": "2025-12-09T10:23:34.000Z",
"dateUpdated": "2026-08-31T00:00:00.000Z",
"serial": 1,
"state": "PUBLISHED",
"vulnId": "GCVE-128-2026-0001"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}