Security readout for executives and security teams
Plain-English summary
CVE-2022-22049 is a Windows privilege escalation flaw in CSRSS. An attacker who already has low-privileged local access could potentially gain high privileges. This is important because it can turn a limited foothold into broader system control.
Executive priority
Treat as high priority for normal patch governance. It is not evidenced here as actively exploited, but it can materially increase impact after initial compromise. Patch affected Windows systems promptly, especially where users or services have local logon access.
Technical view
Microsoft rates this as CVSS 7.8 high: local attack vector, low complexity, low privileges required, no user interaction, and high confidentiality, integrity, and availability impact. The listed weakness is CWE-787, out-of-bounds write, affecting multiple Windows client and server versions.
Likely exposure
Exposure is most likely on unpatched affected Windows endpoints and servers, including listed Windows 7, 8.1, 10, 11, Server 2008, 2016, 2019, and 2022 variants. The supplied data does not identify non-Microsoft products.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation evidence. The CVSS vector indicates exploitation requires local access and low privileges, so risk is highest after phishing, malware, stolen credentials, or insider access.
Researcher notes
Key constraints are local access and low privileges. The public bundle names CWE-787 but does not provide technical root-cause details, proof of concept, exploitability evidence, or KB mapping. Use MSRC as the authoritative source for version-specific remediation.
Mitigation direction
- Apply Microsoft security updates for CVE-2022-22049 using MSRC guidance.
- Prioritize internet-exposed administration hosts, shared workstations, and high-value servers.
- Confirm unsupported Windows versions have an approved support or isolation plan.
- Reduce unnecessary local user access on sensitive Windows systems.
Validation and detection
- Inventory Windows versions against the affected product list in the advisory.
- Verify installed updates satisfy Microsoft guidance for CVE-2022-22049.
- Use authenticated vulnerability scanning where available to confirm patch status.
- Review endpoint telemetry for suspicious local privilege escalation activity.
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-787: 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-2022-22049 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.
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:C1.85.9Primary 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/E:U/RL:O/RC:C
Source materials
- CVE List V5 sourceCVE List V5
- Windows Client Server Run-time Subsystem (CSRSS) 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.