Security readout for executives and security teams
Plain-English summary
A logged-in attacker with limited privileges could exploit a memory-handling flaw in the Windows DNS Client to gain higher privileges. Successful exploitation could compromise sensitive data, system integrity, and availability. The attack must originate locally, requires high complexity, and needs no user interaction.
Executive priority
Treat this as a high-priority patching issue, especially on multi-user systems and sensitive servers. It is not presented as remotely exploitable or actively exploited, reducing immediate emergency pressure. Complete exposure assessment and vendor-directed updating within the normal high-severity remediation window.
Technical view
CVE-2026-41108 is a CWE-122 heap-based buffer overflow in Microsoft Windows DNS. It enables local elevation of privilege from an already authorized, low-privileged context. CVSS 3.1 rates it 7.0, with high attack complexity and high potential impact across confidentiality, integrity, and availability.
Likely exposure
Exposure includes the listed Windows 10, Windows 11, and Windows Server releases, including specified Server Core installations. Organizations should prioritize systems where untrusted or lightly trusted users can obtain local access. The bundle does not provide configuration-based exclusions or precise security-update build thresholds.
Exploitation context
The supplied evidence does not establish active exploitation, and the CVE is not identified as KEV. Exploitation requires local access, low privileges, and high complexity, but no user interaction. Public exploit availability is not established by the provided sources.
Researcher notes
The vector is AV:L/AC:H/PR:L/UI:N/S:U with C:H/I:H/A:H. The flaw is categorized as CWE-122, but the bundle provides no vulnerable function, triggering condition, patch identifiers, indicators, or public proof-of-concept information. Avoid inferring a remote DNS attack path from the component name.
Mitigation direction
- Review Microsoft’s advisory and apply the security updates specified for each affected Windows release.
- Prioritize shared workstations, remote-session hosts, and servers permitting access by low-privileged users.
- Restrict local and remote interactive access to trusted users until affected systems are updated.
- Use vendor guidance for unsupported Windows releases; the bundle names no alternative mitigation.
Validation and detection
- Inventory Windows editions, versions, build numbers, and Server Core installations against the affected list.
- Confirm each affected system has Microsoft’s applicable security update installed successfully.
- Use vulnerability management tooling to identify missing or failed updates across the Windows estate.
- Recheck Microsoft’s advisory for revised affected-version and remediation information.
- Review endpoint telemetry for unexplained privilege elevation; available evidence provides no CVE-specific indicators.
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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-41108 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/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:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C15.9microsoftVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:L/AC:H/PR:L/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
- Windows DNS Client Elevation of Privilege 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.