Security readout for executives and security teams
Plain-English summary
This Microsoft Windows RPC Runtime flaw can let an authenticated network attacker cause a denial of service. It is not a data theft or code execution issue in the supplied sources, but it can disrupt availability on affected Windows clients and servers if patches are missing.
Executive priority
Treat this as a normal-priority availability patching issue, not an emergency zero-day based on supplied evidence. Prioritize internet-adjacent, shared, or business-critical Windows servers, then complete standard Windows patch coverage.
Technical view
CVE-2023-35314 is a CWE-125 out-of-bounds read in Microsoft Remote Procedure Call Runtime. CVSS 3.1 is 6.5: network reachable, low complexity, low privileges required, no user interaction, with high availability impact and no confidentiality or integrity impact.
Likely exposure
Exposure is likely in environments running affected Windows 10, Windows 11, and Windows Server 2008 through 2022 builds that have not received the relevant Microsoft security update. Servers with reachable RPC services deserve earlier review because the impact is service availability.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. The CVSS vector requires low privileges, so this is most relevant after an attacker already has authenticated access or can use valid low-privilege credentials.
Researcher notes
Key constraints are AV:N, AC:L, PR:L, UI:N, and A:H. Evidence supports denial of service only. Do not assume unauthenticated exploitation, code execution, data exposure, or known exploitation without additional vendor or threat-intelligence confirmation.
Mitigation direction
- Apply Microsoft security updates for every affected Windows build.
- Review the MSRC advisory for product-specific update guidance.
- Prioritize Windows servers where RPC availability is operationally important.
- Track unsupported legacy systems as exceptions requiring vendor guidance.
Validation and detection
- Inventory affected Windows versions and build numbers.
- Confirm the relevant Microsoft security update is installed.
- Check scanner findings for CVE-2023-35314 patch status.
- Document any unpatched systems and business owners.
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-125: 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 lookupCVE-2023-35314 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:N/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:L/UI:N/S:U/C:N/I:N/A:H/E:U/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:N/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Remote Procedure Call Runtime Denial of Service 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.