Security readout for executives and security teams
Plain-English summary
CVE-2022-21919 is a Windows User Profile Service privilege escalation flaw. An attacker who already has low-level local access could gain powerful system-level control. It matters because CISA lists it as known exploited, so unpatched affected Windows endpoints and servers should be treated as urgent exposure.
Executive priority
Prioritize remediation as high. This is not a remote entry-point vulnerability, but it can turn limited access into full control on affected Windows systems, and CISA KEV confirms exploitation has occurred.
Technical view
Microsoft describes this as a Windows User Profile Service elevation of privilege vulnerability, mapped to CWE-59. CVSS 3.1 is 7.0 with local attack vector, high complexity, low privileges required, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely on affected Windows client and server builds listed by Microsoft, especially systems where users, contractors, or malware can obtain local low-privilege execution. The bundle does not identify vulnerable configuration prerequisites beyond affected products and versions.
Exploitation context
CISA KEV inclusion supports known exploitation. The provided sources do not describe exploit maturity, actor attribution, campaign scale, or technical exploitation details. Because this is local privilege escalation, it is most concerning after phishing, credential misuse, or another initial foothold.
Researcher notes
The source bundle gives severity, CVSS vector, CWE-59, affected Microsoft products, and KEV status, but not root-cause detail, patch KB mapping, or exploit conditions. Validate using MSRC product guidance and installed update evidence, not version names alone.
Mitigation direction
- Apply Microsoft security updates for CVE-2022-21919 from the MSRC update guide.
- Prioritize affected Windows servers and shared workstations with untrusted local users.
- Remove or isolate unsupported affected Windows systems if updates are unavailable.
- Review Microsoft guidance for exact product, build, and servicing requirements.
- Track CISA KEV remediation expectations for regulated or federal environments.
Validation and detection
- Inventory Windows versions and builds against Microsoft’s affected product list.
- Confirm the applicable Microsoft update for CVE-2022-21919 is installed.
- Check vulnerability scanner results for this CVE after patching.
- Review endpoint telemetry for suspicious local privilege escalation activity.
- Document exceptions where systems cannot receive Microsoft updates.
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-59: 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-2022-21919 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
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/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
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:P/RL:O/RC:C15.9Primary CVE scoreVulnerability 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:P/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows User Profile Service Elevation of Privilege VulnerabilityCVE reference · vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21919CVE reference · x_refsource_MISC, x_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21919CVE 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.
Improper Link Resolution Before File Access ('Link Following')
Improper Link Resolution Before File Access ('Link Following') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.