Security readout for executives and security teams
Plain-English summary
CVE-2022-26807 is a Windows Work Folder Service elevation-of-privilege flaw. An attacker who already has low-privileged local access could potentially gain greater control of an affected Windows system. The CVSS vector shows high confidentiality, integrity, and availability impact, but the attack is local and high complexity.
Executive priority
Prioritize this in normal high-severity Windows patch cycles. It is not presented as remotely exploitable or actively exploited in the supplied evidence, but successful exploitation could materially increase attacker control after initial access.
Technical view
Microsoft identifies this as a Windows Work Folder Service EoP vulnerability with CWE-362, indicating a race condition. CVSS 3.1 is 7.0: local attack vector, high attack complexity, low privileges required, no user interaction, unchanged scope, and high impact across confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to affected Windows client and server versions listed by Microsoft, including multiple Windows 10, Windows 11 21H2, Windows Server 2016, 2019, 2022, Windows 8.1, Windows 7, and Server 2008 R2 variants. Systems not patched according to Microsoft guidance remain the concern.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation evidence. The CVSS vector marks exploit code maturity as unproven. Treat this as a serious local privilege escalation risk, especially where attackers may already have user-level access.
Researcher notes
Evidence supports a local, high-complexity race condition in Windows Work Folder Service. The source bundle does not include root-cause detail, exploit primitives, affected binaries, KB numbers, or compensating controls beyond Microsoft’s advisory. Avoid assuming active exploitation or service-specific mitigations without further vendor evidence.
Mitigation direction
- Apply the official Microsoft update guidance for CVE-2022-26807.
- Inventory affected Windows versions across endpoints and servers.
- Prioritize patching shared, exposed, or high-value Windows systems.
- Confirm legacy systems have applicable Microsoft servicing or retirement plans.
Validation and detection
- Check OS versions against Microsoft’s affected product list.
- Verify security updates for CVE-2022-26807 are installed.
- Review endpoint telemetry for suspicious local privilege escalation activity.
- Confirm Work Folder Service exposure assumptions with system 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-362: 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-2022-26807 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
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/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.
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:U/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:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Work Folder Service Elevation of Privilege VulnerabilityCVE reference · vendor-advisory
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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.