Security readout for executives and security teams
Plain-English summary
A critical flaw in Microsoft Message Queuing could let an unauthenticated network attacker run code on an affected Windows system. Successful compromise could expose data, alter systems, or disrupt operations. Risk is greatest where MSMQ is present and reachable from untrusted networks.
Executive priority
Treat as an urgent patching and exposure-reduction issue because unauthenticated network exploitation could cause full confidentiality, integrity, and availability impact. Prioritize reachable MSMQ servers first, while validating application dependencies before disabling services.
Technical view
CVE-2023-35385 is an MSMQ remote-code-execution vulnerability classified as CWE-190, integer overflow. Its CVSS 3.1 score is 9.8, with network access, low complexity, no privileges, and no user interaction. The supplied sources do not describe the precise vulnerable code path or exploitation prerequisites.
Likely exposure
Potential exposure includes the listed Windows 10, Windows 11, and Windows Server versions where MSMQ is installed or enabled. Network reachability materially increases risk. The bundle does not establish whether MSMQ is enabled by default, which ports are exposed, or whether additional configuration is required.
Exploitation context
The bundle does not support a claim of active exploitation: the CVE is not identified as CISA KEV, and the CVSS vector records exploit maturity as unproven. Absence from KEV does not prove exploitation is absent. No public exploit evidence is supplied.
Researcher notes
The strongest supplied evidence is the Microsoft advisory, CVE record, CVSS vector, CWE classification, and affected-product list. Detailed root cause, protocol conditions, update identifiers, proof-of-concept availability, and observed attacks are not included; researchers should avoid inferring them.
Mitigation direction
- Apply the applicable Microsoft security update identified by the vendor advisory.
- Prioritize internet-reachable and untrusted-network-accessible systems running MSMQ.
- Disable MSMQ where it is unnecessary, subject to application and operational review.
- Restrict network access to MSMQ until affected systems are updated.
- Check Microsoft guidance for version-specific updates and any additional mitigations.
Validation and detection
- Inventory systems matching the Windows versions listed in the source bundle.
- Determine where MSMQ is installed, enabled, and required by business applications.
- Identify MSMQ services reachable from internet-facing or untrusted network segments.
- Verify applicable Microsoft security updates are installed successfully.
- Review security telemetry for unexpected access or behavior involving MSMQ 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-190: 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-2023-35385 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.
SSVC decision data
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:C3.95.9microsoftVulnerability 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityCVE reference, microsoft · vendor-advisory, patch
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.