Security readout for executives and security teams
Plain-English summary
This is a Microsoft Windows DNS Server remote code execution issue. It could let a highly privileged attacker compromise confidentiality, integrity, and availability on affected systems. The supplied evidence shows Microsoft has official remediation, but does not show active exploitation.
Executive priority
Treat this as high priority for Windows DNS infrastructure. It requires high privileges, so it is not the same urgency as unauthenticated wormable RCE, but compromise of DNS servers can materially affect identity, routing, and business availability.
Technical view
CVE-2022-26826 is a network-reachable Windows DNS Server RCE vulnerability mapped to CWE-77. CVSS 3.1 is 7.2 with low attack complexity, no user interaction, high privileges required, and high impact across confidentiality, integrity, and availability.
Likely exposure
Exposure is most relevant where affected Windows Server DNS roles are running, including Windows Server 2016, 2019, 2022, and Server Core installations listed in the source bundle.
Exploitation context
The supplied sources do not support active exploitation. The KEV flag is false, and the CVSS vector marks exploit maturity as unproven. High privileges are required, limiting opportunistic abuse but preserving serious post-compromise risk.
Researcher notes
Key constraints are PR:H and AV:N. Validate exposure by installed role, not just OS version. The provided data names Microsoft remediation but does not include exploit details, indicators, or a workaround.
Mitigation direction
- Review the MSRC advisory for affected builds and install the official security update.
- Prioritize Windows DNS Server hosts and domain infrastructure first.
- Confirm Server Core installations receive the applicable Microsoft update.
- Track patch exceptions until Microsoft remediation is applied.
- Check vendor guidance before using compensating controls.
Validation and detection
- Inventory Windows systems running the DNS Server role.
- Map each host version against the affected product list.
- Verify the applicable Microsoft security update is installed.
- Review DNS server administrative access for unnecessary high-privilege accounts.
- Document unpatched systems and remediation 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-77: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupExecution 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-2022-26826 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
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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.
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:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C1.25.9microsoftVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/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.
- 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
- Windows DNS Server Remote Code Execution VulnerabilityCVE reference, microsoft · 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.
Improper Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.