Security readout for executives and security teams
Plain-English summary
Someone with basic authorized access to an affected Windows computer could exploit a kernel memory-handling flaw to gain higher privileges. That escalation could enable theft or alteration of sensitive information and system disruption. The vulnerability does not provide an initial remote entry path based on the supplied evidence.
Executive priority
Treat this as expedited, high-priority patching rather than evidence of an active emergency. A compromised basic account could become a substantially more damaging foothold, particularly on servers and privileged workstations. Prioritize by system sensitivity, user access, and patch status.
Technical view
CVE-2025-26648 involves sensitive data stored in improperly locked Windows Kernel memory. A local, low-privileged attacker may elevate privileges without user interaction. CVSS 3.1 rates it 7.8 with low attack complexity and high confidentiality, integrity, and availability impacts. The supplied sources do not describe detailed exploitation mechanics.
Likely exposure
Potential exposure spans the listed Windows 10, Windows 11, and Windows Server 2008 R2 through 2022 releases, including Server Core variants. Actual exposure depends on OS version and security-update status. Exploitation requires an attacker to already have authorized local, low-privileged access.
Exploitation context
The CVSS vector indicates local access, low privileges, low complexity, and no user interaction. The supplied KEV flag is false, and no cited source establishes active exploitation. This absence does not prove exploitation has never occurred; it means active exploitation is unsupported by the provided evidence.
Researcher notes
The assigned CWE-416 and CWE-591 categories suggest memory-lifetime or pointer-management issues, while the description emphasizes improperly locked sensitive memory. The provided public details are insufficient to reconcile those descriptions, identify the exact kernel path, assess exploit reliability, or name specific update packages. Confirm precise applicability through MSRC.
Mitigation direction
- Apply the applicable Microsoft security update identified in the MSRC advisory.
- Prioritize shared systems, sensitive servers, administrative workstations, and endpoints with many local users.
- Restrict unnecessary local access and remove unneeded low-privilege accounts.
- If patching is delayed, check MSRC for current vendor-supported mitigations or workarounds.
Validation and detection
- Inventory Windows editions, versions, and builds across endpoints and servers.
- Map discovered systems against the affected releases listed by Microsoft.
- Verify each system has the applicable security update from the MSRC advisory.
- Re-run authenticated vulnerability scanning after remediation and investigate remaining detections.
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-416: 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 lookupCWE-591: 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-2025-26648 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/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:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.85.9microsoftVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/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 Kernel 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Sensitive Data Storage in Improperly Locked Memory
Sensitive Data Storage in Improperly Locked Memory represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.