Security readout for executives and security teams
Plain-English summary
This flaw affects Microsoft Active Directory Federation Services on several Windows Server versions. The public data describes it as a security feature bypass with high integrity impact, meaning successful abuse could let an authenticated attacker alter trusted behavior rather than steal data or crash systems. Public evidence in the bundle does not confirm active exploitation.
Executive priority
Treat this as a moderate-priority identity infrastructure issue. It is not confirmed actively exploited in the provided sources, but ADFS supports authentication trust, so delayed remediation can create meaningful business risk if affected servers remain unpatched.
Technical view
CVE-2023-35348 is an ADFS security feature bypass mapped to CWE-522. CVSS 3.1 is 6.5 with network attack vector, low complexity, low privileges required, no user interaction, unchanged scope, no confidentiality or availability impact, and high integrity impact. Microsoft is the affected vendor and MSRC is the remediation authority.
Likely exposure
Exposure is most likely in organizations running Active Directory Federation Services on affected Windows Server 2016, 2019, or 2022 systems, including listed Server Core installations. Risk is higher where ADFS endpoints are reachable over a network and support business-critical authentication flows.
Exploitation context
The source bundle marks CISA KEV as false, and no cited source confirms active exploitation. The CVSS vector indicates exploitation requires network access and low privileges but no user interaction. Public details are sparse, so do not infer unauthenticated or widespread exploitation from this bundle.
Researcher notes
The public record is thin: MSRC identifies the product family and CVSS characteristics, but the bundle does not include technical root cause, exploit method, or detailed mitigations. Analysis should stay anchored to the CVSS vector, affected Windows Server versions, CWE-522, and Microsoft’s advisory.
Mitigation direction
- Review the MSRC advisory for CVE-2023-35348 and apply applicable Microsoft security updates.
- Prioritize ADFS servers supporting external or critical authentication workflows.
- Restrict network access to ADFS administrative and federation services where business allows.
- Monitor Microsoft guidance for supersedence, prerequisites, or follow-up advisories.
Validation and detection
- Inventory Windows Server 2016, 2019, and 2022 systems running ADFS.
- Compare installed patch levels against the MSRC CVE-2023-35348 advisory.
- Confirm Server Core ADFS hosts are included in the patch review.
- Review authentication and federation logs for unusual integrity-related changes or unexpected token behavior.
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-522: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. 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 lookupCVE-2023-35348 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:F/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.
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:N/I:H/A:N/E:F/RL:O/RC:C2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:F/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Active Directory Federation Service Security Feature Bypass VulnerabilityCVE reference · vendor-advisory
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.