Security readout for executives and security teams
Plain-English summary
CVE-2019-0880 lets a low-privileged local Windows user gain higher privileges through Microsoft splwow64.exe. It is not described as remote initial access, but it can turn a foothold on an affected workstation or server into full compromise. CISA lists it in KEV, so treat it as known exploited.
Executive priority
Prioritize remediation as high. This is a known-exploited Windows privilege escalation issue that can increase attacker impact after an initial compromise, especially on servers, administrative workstations, and legacy Windows fleets.
Technical view
The vulnerability is a local elevation of privilege flaw in how splwow64.exe handles certain calls. CVSS 3.1 is 7.8 with local attack vector, low complexity, low privileges required, no user interaction, unchanged scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Organizations may be exposed if they still run affected Windows 8.1, Windows RT 8.1, Windows 10 builds through 1903, or Windows Server 2012 through 2019 and version 1903 Server Core without the applicable Microsoft guidance applied.
Exploitation context
CISA KEV listing supports known exploitation. The source bundle does not provide exploit mechanics, target campaigns, or volume. Because exploitation is local, this is most urgent where attackers may already have user-level access through phishing, malware, stolen credentials, or exposed endpoints.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, affected Microsoft product list, MSRC reference, and CISA KEV status. The bundle does not include root-cause detail, proof-of-concept status, exploit chains, or specific KB identifiers.
Mitigation direction
- Review Microsoft MSRC guidance for CVE-2019-0880.
- Apply applicable Microsoft security updates for affected Windows builds.
- Prioritize internet-facing, shared, and high-value Windows systems.
- Retire or isolate unsupported affected operating systems.
- Monitor for suspicious splwow64.exe privilege escalation behavior.
Validation and detection
- Inventory Windows versions against the affected product list.
- Confirm patch status against the MSRC CVE-2019-0880 advisory.
- Check whether affected Server Core installations remain in use.
- Review EDR and Windows logs for unusual splwow64.exe activity.
- Verify vulnerability scanners identify CVE-2019-0880 as remediated.
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.
Privilege 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-2019-0880 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:L/UI:N/S:U/C:H/I:H/A:H
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
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:H1.85.9Primary CVE scoreVulnerability 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
Source materials
- CVE List V5 sourceCVE List V5
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0880CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0880CVE reference · 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.