Security readout for executives and security teams
Plain-English summary
A user who already has limited access to an affected Windows computer could exploit a printer-driver memory-management flaw to gain higher privileges. Successful exploitation could enable serious compromise of data, system integrity, and availability. This is a local attack, not a directly remote compromise.
Executive priority
Treat this as a high-priority patching issue. It is not described as remotely exploitable or actively exploited, but low-complexity local privilege escalation can turn an initial foothold into broad system compromise. Accelerate remediation on shared systems, servers, and privileged-user devices.
Technical view
CVE-2026-55004 is a CWE-415 double-free vulnerability in Microsoft Printer Drivers. It has CVSS 3.1 score 7.8: local access, low complexity, low privileges, and no user interaction, with high confidentiality, integrity, and availability impact. Scope remains within the affected security authority.
Likely exposure
Exposure includes the listed Windows 10, Windows 11, and Windows Server releases, including specified Server Core installations. Prioritize multi-user endpoints, administrative workstations, and servers where untrusted or lower-privileged users can obtain local access. The supplied data does not identify affected driver versions or configurations more precisely.
Exploitation context
The attacker must already be authorized and able to act locally with low privileges. Exploitation requires no additional user interaction and is rated low complexity. The supplied sources do not establish active exploitation, and the CVE is not identified as being in CISA's KEV catalog.
Researcher notes
The supplied record identifies a double-free but provides no affected code path, driver list, technical trigger, public proof of concept, or observed exploitation. Validation should therefore rely on Microsoft applicability and update status rather than speculative configuration checks. CVSS temporal metrics report exploit maturity as unproven and an official remediation level.
Mitigation direction
- Review Microsoft's CVE advisory and identify the applicable security update for each affected Windows release.
- Deploy vendor-provided updates through the organization's normal expedited patch process.
- Prioritize systems accessible to lower-privileged or untrusted local users.
- Apply compensating access restrictions where updates cannot yet be deployed.
Validation and detection
- Inventory endpoints and servers against every Windows release and build listed in the advisory.
- Confirm the applicable Microsoft security update is installed on each exposed system.
- Re-scan patched assets and investigate systems with missing, failed, or pending updates.
- Verify unsupported or exceptional systems have documented compensating controls and remediation owners.
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-415: 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-2026-55004 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 Print Configuration 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.
Double Free
Double Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.