Security readout for executives and security teams
Plain-English summary
Azure File Sync versions 1.0.0, 16.0.0, and 17.0.0 are listed as affected by a local privilege-escalation flaw. A low-privileged attacker could manipulate file integrity, but exploitation requires high complexity and user interaction. The supplied evidence does not indicate confidentiality loss, service disruption, or active exploitation.
Executive priority
Schedule prompt remediation through standard patch management, prioritizing shared servers or hosts with multiple local users. The moderate score and demanding prerequisites reduce emergency urgency, but the potential for high-integrity modification warrants action. Escalate if local compromise or suspicious file changes are already suspected.
Technical view
CVE-2024-35253 is an Azure File Sync elevation-of-privilege vulnerability categorized as CWE-59, involving improper link resolution before file access. Its CVSS 3.1 score is 4.4: local access, low privileges, high complexity, and user interaction are required. Successful exploitation can cause high-integrity impact without stated confidentiality or availability impact.
Likely exposure
Exposure is limited to systems running the listed Azure File Sync versions: 1.0.0, 16.0.0, or 17.0.0. Because attack access is local and requires an existing low-privileged position plus user interaction, internet exposure alone does not establish exploitability. The bundle does not identify additional affected versions or configurations.
Exploitation context
The CVSS vector records high exploit-code maturity, but the source bundle provides no evidence of active attacks and states the CVE is not in KEV. Exploitation requires local access, low privileges, high complexity, and user interaction, reducing broad remote-attack likelihood while leaving compromised or shared systems relevant.
Researcher notes
CWE-59 suggests unsafe resolution of file links before access, but the bundle provides no vulnerable path, component detail, or exploitation sequence. Assessment should remain defensive: confirm product versions, vendor update applicability, local trust boundaries, and integrity-relevant telemetry. Do not infer remote reachability or broader affected releases from the available evidence.
Mitigation direction
- Review Microsoft’s CVE advisory for the applicable security update and installation requirements.
- Apply Microsoft’s prescribed update to affected Azure File Sync deployments using normal change controls.
- Restrict local access and unnecessary low-privileged accounts until remediation is confirmed.
- Monitor Microsoft guidance for affected-version or remediation updates.
Validation and detection
- Inventory Azure File Sync installations and record their exact versions.
- Flag installations matching versions 1.0.0, 16.0.0, or 17.0.0.
- Verify Microsoft’s applicable security update is installed successfully.
- Review local account activity and unexpected integrity changes on affected hosts.
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-59: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-35253 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
- Medium
- CVSS
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N/E:H/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:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N/E:H/RL:O/RC:C0.83.6microsoftVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N/E:H/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 Azure File Sync Elevation of Privilege 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.
Improper Link Resolution Before File Access ('Link Following')
Improper Link Resolution Before File Access ('Link Following') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.