Security readout for executives and security teams
Plain-English summary
CVE-2024-38018 is a high-severity SharePoint Server flaw that could let a low-privileged authenticated attacker run code remotely. Successful exploitation could expose sensitive information, alter SharePoint content, or disrupt service. The supplied evidence does not establish exploitation in the wild.
Executive priority
Treat this as a high-priority remediation item, especially for internet-facing or business-critical SharePoint environments. Assign ownership, verify farm-wide patch completion, and track exceptions. Emergency incident status is not justified solely by this bundle because active exploitation is not established.
Technical view
The vulnerability affects listed SharePoint Server 2016, 2019, and Subscription Edition deployments. Its CVSS 3.1 score is 8.8, with network access, low attack complexity, low privileges, and no user interaction. CWE-502 associates it with unsafe deserialization. Microsoft provides a security update, but exact fixed builds are not included here.
Likely exposure
Exposure is most likely where an affected on-premises SharePoint server is network-reachable and an attacker can authenticate with low privileges. The bundle lists version 16.0.0 for each affected product, but administrators should use Microsoft’s advisory and installed build numbers to determine actual exposure.
Exploitation context
No active exploitation is established by the supplied sources, and the bundle marks the CVE as absent from KEV. The attack still has serious potential because it is remotely reachable, requires only low privileges, needs no user interaction, and could compromise confidentiality, integrity, and availability.
Researcher notes
The supplied material identifies CWE-502 and the CVSS attack conditions but provides no detailed vulnerable component, exploitation chain, detection indicators, or fixed build numbers. Researchers should consult Microsoft’s advisory and the CVE record for authoritative update details. Avoid interpreting the generic 16.0.0 entries as sufficient build-level confirmation.
Mitigation direction
- Review Microsoft’s CVE advisory and apply the applicable SharePoint security update.
- Prioritize externally reachable or broadly accessible SharePoint farms.
- Restrict unnecessary SharePoint access while updates are pending.
- Ensure every server in each SharePoint farm receives the required update.
Validation and detection
- Inventory SharePoint editions and installed build numbers across all farms.
- Compare each build with Microsoft’s advisory and applicable security update.
- Confirm updates succeeded on every SharePoint server, not only front-end nodes.
- Reassess network reachability and low-privileged account access after remediation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-38018 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: 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
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.85.9microsoftVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft SharePoint Server Remote Code Execution VulnerabilityCVE reference, microsoft · vendor-advisory, patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.