Security readout for executives and security teams
Plain-English summary
CVE-2023-35367 is a critical Microsoft Windows RRAS remote code execution flaw. A vulnerable RRAS system could be compromised over the network without authentication or user interaction. Prioritize systems using RRAS for routing, VPN, or remote access roles.
Executive priority
Treat as urgent for any organization using Windows RRAS, especially for VPN or remote access. Patch exposed RRAS servers promptly and verify no unnecessary RRAS services remain enabled.
Technical view
The CVE is a Windows Routing and Remote Access Service RCE vulnerability mapped to CWE-20. The provided CVSS 3.1 score is 9.8, with network attack vector, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on listed Windows Server and Windows client versions where RRAS is present or enabled, especially routing, VPN, or remote access deployments. The bundle does not prove every listed Windows installation is practically reachable.
Exploitation context
The source bundle does not show CISA KEV listing and marks exploit maturity as unproven. Do not claim active exploitation from these sources. The risk remains high because the vulnerability is unauthenticated, network-reachable, and critical.
Researcher notes
Evidence is limited to CVE metadata and Microsoft advisory references. The bundle supports unauthenticated network RCE risk and broad Windows version impact, but does not include exploit details, proof of active exploitation, or detailed workaround text.
Mitigation direction
- Apply Microsoft security updates listed in the MSRC advisory.
- Prioritize internet-facing or remote-access RRAS systems first.
- Reduce RRAS exposure to trusted networks where operationally possible.
- Disable RRAS where it is not required.
- Monitor Microsoft guidance for version-specific remediation details.
Validation and detection
- Inventory Windows systems matching the affected product list.
- Identify hosts with RRAS installed or enabled.
- Compare patch status against the MSRC CVE advisory.
- Review network exposure of RRAS-related remote access services.
- Confirm vulnerability scanners report remediation after updates.
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-20: 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 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-2023-35367 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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.
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:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Routing and Remote Access Service (RRAS) Remote Code Execution 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.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.