Security readout for executives and security teams
Plain-English summary
A flaw in Microsoft’s Windows Print Spooler can let an attacker run code and seriously compromise an affected computer. Successful exploitation can expose information, alter systems, or interrupt operations. CISA lists the vulnerability as known exploited, so organizations should urgently identify listed Windows systems and follow Microsoft’s remediation guidance.
Executive priority
Treat this as urgent because exploitation is documented and successful compromise could cause data loss, unauthorized changes, or disruption. Require prompt inventory, vendor-directed remediation, and evidence that affected servers and endpoints are protected.
Technical view
CVE-2021-1675 is a Windows Print Spooler code-execution vulnerability rated CVSS 7.8. The supplied vector indicates local access, low complexity, no privileges, and required user interaction, with high confidentiality, integrity, and availability impacts. The bundle does not describe the precise exploitation preconditions or complete affected-version boundaries.
Likely exposure
Potential exposure includes the listed Windows 7, 8.1, and 10 releases and Windows Server 2008 through 2019 variants. Matching a listed product or build warrants investigation but does not alone prove vulnerability; installed updates and Microsoft’s version guidance must be checked.
Exploitation context
CISA’s Known Exploited Vulnerabilities listing confirms exploitation has occurred in the wild. The supplied evidence does not identify current campaign activity, exploitation volume, attacker groups, or specific targeting. The local attack vector and required user interaction should be considered alongside the potentially severe system impact.
Researcher notes
The title describes remote code execution, while the supplied CVSS vector specifies local attack access and user interaction. Researchers should preserve that distinction and consult Microsoft and CERT for detailed preconditions. The bundle lacks sufficient evidence to assert attack chains, execution context, current campaigns, or a universal fixed-build threshold.
Mitigation direction
- Review Microsoft’s CVE advisory and apply the security updates specified for each supported Windows release.
- Prioritize listed systems where the Print Spooler is enabled or operationally exposed.
- Follow Microsoft or CERT guidance for temporary safeguards when immediate updating is not possible.
- Monitor affected systems for suspicious spooler-related activity until remediation is verified.
Validation and detection
- Inventory systems running the Windows products and releases identified in the source bundle.
- Compare installed build and update status with Microsoft’s CVE-specific guidance.
- Determine whether the Print Spooler is enabled and required on each potentially affected system.
- Confirm remediation through update-management records and authenticated vulnerability assessment.
- Review security telemetry for unusual Print Spooler behavior or code execution indicators.
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.
Execution 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-2021-1675 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
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.
CISA KEV status
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:R/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:N/UI:R/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.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- 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
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1675CVE reference, microsoft · x_refsource_MISC
- VU#383432CVE reference, microsoft · third-party-advisory, x_refsource_CERT-VN
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1675CVE reference, CISA-ADP · government-resource
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.