CVE Details
CVE-2026-65660
Microsoft SharePoint Code Injection Vulnerability
Published: 2026-09-25
CVSS: 8.8 HIGH
Product: Microsoft SharePoint
Due Date: 2026-09-28
Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.
GitHub PoC
Warning: GitHub PoC repositories are unverified. Some may be fake
or contain malware. Use caution and review code before running anything.
No GitHub PoC data.
FIRST EPSS
EPSS estimates the probability of exploitation in the next 30 days. Higher values indicate higher likelihood of real-world exploitation.
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References
Show Raw Data
| Key | Remaining Key | Value |
|---|---|---|
| dataType | CVE_RECORD | |
| dataVersion | 5.2 | |
| cveMetadata > | cveId | CVE-2026-65660 |
| cveMetadata > | assignerOrgId | f38d906d-7342-40ea-92c1-6c4a2c6478c8 |
| cveMetadata > | state | PUBLISHED |
| cveMetadata > | assignerShortName | microsoft |
| cveMetadata > | dateReserved | 2026-07-22T18:16:01.897Z |
| cveMetadata > | datePublished | 2026-08-11T17:04:55.666Z |
| cveMetadata > | dateUpdated | 2026-09-25T19:36:43.874Z |
| containers > | cna > title | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| containers > | cna > datePublic | 2026-08-11T14:00:00.000Z |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > operator | OR |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > negate | False |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 0 > vulnerable | True |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 0 > criteria | cpe:2.3:a:microsoft:sharepoint_server_2016:*:*:*:*:enterprise:*:*:* |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 0 > versionStartIncluding | 16.0.0 |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 0 > versionEndExcluding | 16.0.5565.1001 |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 1 > vulnerable | True |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 1 > criteria | cpe:2.3:a:microsoft:sharepoint_server_2019:*:*:*:*:*:*:*:* |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 1 > versionStartIncluding | 16.0.0 |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 1 > versionEndExcluding | 16.0.10417.20198 |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 2 > vulnerable | True |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 2 > criteria | cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 2 > versionStartIncluding | 16.0.0 |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 2 > versionEndExcluding | 16.0.19725.20522 |
| containers > | cna > affected > 0 > vendor | Microsoft |
| containers > | cna > affected > 0 > product | Microsoft SharePoint Enterprise Server 2016 |
| containers > | cna > affected > 0 > platforms > 0 | x64-based Systems |
| containers > | cna > affected > 0 > versions > 0 > version | 16.0.0 |
| containers > | cna > affected > 0 > versions > 0 > lessThan | 16.0.5565.1001 |
| containers > | cna > affected > 0 > versions > 0 > versionType | custom |
| containers > | cna > affected > 0 > versions > 0 > status | affected |
| containers > | cna > affected > 1 > vendor | Microsoft |
| containers > | cna > affected > 1 > product | Microsoft SharePoint Server 2019 |
| containers > | cna > affected > 1 > platforms > 0 | x64-based Systems |
| containers > | cna > affected > 1 > versions > 0 > version | 16.0.0 |
| containers > | cna > affected > 1 > versions > 0 > lessThan | 16.0.10417.20198 |
| containers > | cna > affected > 1 > versions > 0 > versionType | custom |
| containers > | cna > affected > 1 > versions > 0 > status | affected |
| containers > | cna > affected > 2 > vendor | Microsoft |
| containers > | cna > affected > 2 > product | Microsoft SharePoint Server Subscription Edition |
| containers > | cna > affected > 2 > platforms > 0 | x64-based Systems |
| containers > | cna > affected > 2 > versions > 0 > version | 16.0.0 |
| containers > | cna > affected > 2 > versions > 0 > lessThan | 16.0.19725.20522 |
| containers > | cna > affected > 2 > versions > 0 > versionType | custom |
| containers > | cna > affected > 2 > versions > 0 > status | affected |
| containers > | cna > descriptions > 0 > value | Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network. |
| containers > | cna > descriptions > 0 > lang | en-US |
| containers > | cna > problemTypes > 0 > descriptions > 0 > description | CWE-94: Improper Control of Generation of Code ('Code Injection') |
| containers > | cna > problemTypes > 0 > descriptions > 0 > lang | en-US |
| containers > | cna > problemTypes > 0 > descriptions > 0 > type | CWE |
| containers > | cna > problemTypes > 0 > descriptions > 0 > cweId | CWE-94 |
| containers > | cna > providerMetadata > orgId | f38d906d-7342-40ea-92c1-6c4a2c6478c8 |
| containers > | cna > providerMetadata > shortName | microsoft |
| containers > | cna > providerMetadata > dateUpdated | 2026-09-25T19:36:43.874Z |
| containers > | cna > references > 0 > name | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| containers > | cna > references > 0 > tags > 0 | vendor-advisory |
| containers > | cna > references > 0 > tags > 1 | patch |
| containers > | cna > references > 0 > url | https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660 |
| containers > | cna > metrics > 0 > format | CVSS |
| containers > | cna > metrics > 0 > scenarios > 0 > lang | en-US |
| containers > | cna > metrics > 0 > scenarios > 0 > value | GENERAL |
| containers > | cna > metrics > 0 > cvssV3_1 > version | 3.1 |
| containers > | cna > metrics > 0 > cvssV3_1 > baseSeverity | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > baseScore | 8.8 |
| containers > | cna > metrics > 0 > cvssV3_1 > vectorString | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| containers > | adp > 0 > metrics > 0 > other > type | ssvc |
| containers > | adp > 0 > metrics > 0 > other > content > id | CVE-2026-65660 |
| containers > | adp > 0 > metrics > 0 > other > content > role | CISA Coordinator |
| containers > | adp > 0 > metrics > 0 > other > content > options > 0 > Exploitation | active |
| containers > | adp > 0 > metrics > 0 > other > content > options > 1 > Automatable | no |
| containers > | adp > 0 > metrics > 0 > other > content > options > 2 > Technical Impact | total |
| containers > | adp > 0 > metrics > 0 > other > content > version | 2.0.3 |
| containers > | adp > 0 > metrics > 0 > other > content > timestamp | 2026-09-25T15:40:09.216765Z |
| containers > | adp > 0 > references > 0 > url | https://blog.previdian.com/cve-2026-65660-previdian-observes-two-stage-sharepoint-exploitation-attempts/ |
| containers > | adp > 0 > references > 0 > tags > 0 | third-party-advisory |
| containers > | adp > 0 > references > 1 > url | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-65660 |
| containers > | adp > 0 > references > 1 > tags > 0 | government-resource |
| containers > | adp > 0 > title | CISA ADP Vulnrichment |
| containers > | adp > 0 > providerMetadata > orgId | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| containers > | adp > 0 > providerMetadata > shortName | CISA-ADP |
| containers > | adp > 0 > providerMetadata > dateUpdated | 2026-09-25T15:41:24.086Z |