Security readout for executives and security teams
Plain-English summary
This flaw lets an authenticated attacker run operating-system commands on a TP-Link ER7206 router through GRE policy handling. It is serious because successful abuse could compromise the router, but the public sources state the attacker must already authenticate.
Executive priority
Treat as a priority for any affected router because the impact is full confidentiality, integrity, and availability loss. Urgency is highest for remotely administered devices or environments with many privileged users.
Technical view
CVE-2023-47167 is a post-authentication CWE-78 command injection in TP-Link ER7206 Omada Gigabit VPN Router firmware 1.3.0 build 20230322 Rel.70591. A specially crafted HTTP request to GRE policy functionality can lead to arbitrary command injection. CVSS 3.1 is 7.2 high with PR:H.
Likely exposure
Exposure is currently evidenced only for TP-Link ER7206 Omada Gigabit VPN Router version 1.3.0 build 20230322 Rel.70591. Risk is highest where router administration is reachable from broad internal networks, VPN users, or the internet.
Exploitation context
The provided sources describe authenticated HTTP request exploitation but do not state active exploitation. The CVE is not marked as KEV. Required high privileges lower opportunistic risk, but router compromise can have major network impact.
Researcher notes
Evidence is limited to the named firmware and GRE policy command injection description. Do not generalize to other TP-Link products without vendor evidence. No public source in the bundle confirms exploitation in the wild or a specific fixed version.
Mitigation direction
- Inventory TP-Link ER7206 routers and record firmware versions.
- Restrict router administration to trusted management networks only.
- Review TP-Link and Talos guidance for fixed firmware or vendor mitigations.
- Remove unnecessary admin accounts and enforce strong credentials.
- Monitor router configuration changes and unexpected administrative activity.
Validation and detection
- Confirm whether any ER7206 runs firmware 1.3.0 build 20230322 Rel.70591.
- Verify management interfaces are not internet-accessible.
- Review administrative account lists for unnecessary privileged users.
- Check logs for recent GRE policy changes or unusual authenticated requests.
- Confirm remediation status against current TP-Link vendor guidance.
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-78: 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-2023-47167 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
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:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability 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
Source materials
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 an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.