Security readout for executives and security teams
Plain-English summary
CVE-2023-35298 is a Microsoft HTTP.sys denial-of-service flaw. An unauthenticated network attacker could cause availability loss on affected Windows systems. The business risk is service disruption, not data theft or system takeover based on the provided sources.
Executive priority
Treat as a high-priority patching item for exposed or critical Windows systems because the likely impact is outage. It is less urgent than confirmed exploited remote code execution, but availability risk can still affect operations.
Technical view
The issue is classified as CWE-400 resource consumption in HTTP.sys. CVSS 3.1 is 7.5 high: network reachable, low complexity, no privileges, no user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure is most relevant to affected Windows Server 2022, Windows 11 21H2, and Windows 11 22H2 systems where HTTP.sys is reachable over a network. The bundle does not provide affected role or service prerequisites.
Exploitation context
The source bundle marks the CVSS exploit maturity as unproven and KEV is false. No cited source in the bundle confirms active exploitation or public exploit availability.
Researcher notes
Available public detail is sparse. The strongest facts are the MSRC advisory, CVSS vector, CWE-400 classification, affected Microsoft products, and absence from KEV. Do not infer specific crash mechanics or service prerequisites without vendor detail.
Mitigation direction
- Apply Microsoft updates or guidance from the MSRC advisory for CVE-2023-35298.
- Prioritize internet-facing or business-critical affected Windows systems.
- Reduce unnecessary network exposure to HTTP.sys-backed services where operationally feasible.
- Monitor Microsoft guidance for supersedence, affected build details, or workaround updates.
Validation and detection
- Inventory Windows Server 2022 and Windows 11 21H2/22H2 assets.
- Confirm each affected asset has the relevant Microsoft security update installed.
- Identify systems exposing HTTP.sys-backed network services to untrusted networks.
- Review monitoring for unexplained HTTP service outages or availability degradation.
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-400: 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-2023-35298 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
- HTTP.sys 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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.