Security readout for executives and security teams
Plain-English summary
CVE-2023-35338 is a Microsoft Windows denial-of-service flaw in Peer Name Resolution Protocol. A remote, unauthenticated attacker could affect system availability. It does not indicate data theft or privilege escalation, but outages on affected Windows clients or servers can still disrupt operations.
Executive priority
Prioritize remediation in the normal high-severity Windows patch cycle, with faster handling for servers or exposed systems where downtime would affect operations. There is no source evidence of active exploitation, but the vulnerability is remote and unauthenticated.
Technical view
The source bundle describes a CWE-476 null pointer dereference in Windows Peer Name Resolution Protocol with CVSS 3.1 score 7.5: network attack vector, low complexity, no privileges, no user interaction, and high availability impact only. Microsoft is the vendor source and lists official remediation status.
Likely exposure
Exposure is most likely on listed Windows client and server versions where the vulnerable Peer Name Resolution Protocol component is present and reachable over the network. The affected list spans Windows 10, Windows 11, and Windows Server 2008 through 2022 variants.
Exploitation context
The bundle does not show CISA KEV listing or cited active exploitation. CVSS marks exploit maturity as unproven. Treat this as a remotely reachable availability risk with official Microsoft guidance available, not as confirmed in-the-wild exploitation.
Researcher notes
Analysis is limited to the provided bundle. Key points are CVSS AV:N/AC:L/PR:N/UI:N and A:H, CWE-476, Microsoft affected Windows versions, official remediation level, and no KEV signal. No exploit mechanics are provided or inferred.
Mitigation direction
- Apply Microsoft security updates or guidance for CVE-2023-35338.
- Prioritize internet-facing or broadly reachable Windows systems from the affected list.
- Patch Windows Server assets before lower-impact workstations where availability matters most.
- If patching is delayed, consult Microsoft guidance for supported compensating controls.
Validation and detection
- Inventory Windows versions against the affected product list.
- Confirm Microsoft update status for CVE-2023-35338 on in-scope systems.
- Review network exposure for systems using Peer Name Resolution Protocol.
- Monitor availability alerts for affected Windows hosts until remediation is complete.
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-476: 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-2023-35338 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Peer Name Resolution Protocol 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.