Security readout for executives and security teams
Plain-English summary
A memory-safety flaw in Microsoft Message Queuing could let an unauthorized attacker run code on an affected Windows system. Successful exploitation could compromise data, alter the system, or interrupt operations. The supplied CVSS vector classifies the attack as local, so this is not documented here as a conventional remote, internet-facing attack.
Executive priority
Treat this as a high-priority patching item, particularly on critical servers using Message Queuing. The potential impact is complete system compromise, but the supplied evidence indicates a local attack vector and does not establish active exploitation. Track affected-host discovery and update completion to closure.
Technical view
CVE-2026-54992 is a CWE-122 heap-based buffer overflow in the Windows Message Queuing Queue Manager. It has CVSS 3.1 score 8.4: local access, low complexity, no privileges or user interaction, unchanged scope, and high confidentiality, integrity, and availability impact. The supplied evidence does not describe the vulnerable input or exploitation method.
Likely exposure
Exposure includes the listed Windows 10, Windows 11, and Windows Server releases where the vulnerable Message Queuing component is present. Prioritize systems running Message Queuing and accessible to untrusted local processes or users. The bundle provides base versions but no fixed builds, KB identifiers, or evidence of direct network exploitation.
Exploitation context
The supplied record is not marked as CISA KEV, and its CVSS temporal metric reports unproven exploitation. No cited evidence establishes active exploitation or public exploit availability. Exploitation is characterized as local, low-complexity, requiring neither privileges nor user interaction; the necessary local access mechanism is not explained.
Researcher notes
The record identifies a heap-based buffer overflow but provides no function, input path, trigger conditions, proof of concept, or fixed-version details. Researchers should avoid inferring network reachability from the title: the supplied CVSS vector is AV:L. Validate product applicability and remediation against Microsoft's advisory before drawing conclusions about reachable attack surfaces.
Mitigation direction
- Review Microsoft's advisory and install the applicable security update for each affected Windows release.
- Prioritize Message Queuing hosts supporting sensitive, privileged, or business-critical workloads.
- Limit untrusted local access while updates are tested and deployed.
- Check current Microsoft guidance for release-specific prerequisites or additional mitigations.
Validation and detection
- Inventory listed Windows releases and record their exact edition, build, and servicing status.
- Determine which systems have Microsoft Message Queuing installed or operational.
- Use Microsoft's advisory to identify and verify the applicable installed security update.
- Recheck Message Queuing-dependent applications after patching to confirm normal operation.
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-122: 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-2026-54992 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
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/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:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.55.9microsoftVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:L/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 Queue Manager 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.
Heap-based Buffer Overflow
Heap-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.