Security readout for executives and security teams
Plain-English summary
CVE-2023-35365 is a critical Microsoft RRAS remote code execution issue. A network attacker could potentially compromise affected Windows systems without authentication or user interaction if the vulnerable RRAS exposure is reachable. Business urgency is highest for servers using RRAS or reachable from untrusted networks.
Executive priority
Treat as urgent for infrastructure teams because the score is critical and the attack vector is network-based. Patch exposed RRAS systems first, then complete coverage across affected Windows versions. No active exploitation is proven by the provided sources.
Technical view
The issue affects Windows Routing and Remote Access Service across multiple Windows Server, Windows 10, and Windows 11 versions. The bundle maps it to CWE-20 with CVSS 3.1 score 9.8, AV:N/AC:L/PR:N/UI:N and high confidentiality, integrity, and availability impact.
Likely exposure
Most likely exposure is Windows systems from the listed versions where RRAS is enabled and reachable. The source bundle does not state whether RRAS is enabled by default, so teams should validate service deployment and network exposure before assuming broad exposure.
Exploitation context
The provided data does not show CISA KEV listing or active exploitation. Microsoft’s CVSS vector indicates unauthenticated network reachability, low attack complexity, and no user interaction. Exploit maturity is listed as unproven in the supplied vector.
Researcher notes
Focus validation on RRAS presence, reachability, and Microsoft update state. The bundle supports severity, affected platforms, CWE-20, and CVSS characteristics, but does not provide root-cause detail, proof-of-concept status, or precise service configuration assumptions.
Mitigation direction
- Apply Microsoft security updates for affected Windows versions per MSRC guidance.
- Prioritize systems where RRAS is enabled or externally reachable.
- Reduce RRAS exposure to trusted networks until patched.
- Check Microsoft advisory for version-specific update details.
- Track exceptions for any systems that cannot be patched promptly.
Validation and detection
- Inventory Windows systems matching the affected version list.
- Identify hosts with RRAS installed, enabled, or listening.
- Confirm relevant Microsoft updates are installed.
- Review firewall rules and external exposure for RRAS hosts.
- Document any unsupported or delayed-patch systems.
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-2023-35365 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.