Security readout for executives and security teams
Plain-English summary
This CVE describes a critical command injection flaw in TOTOlink A7100RU firmware V7.4cu.2313_B20191024. If reachable, an unauthenticated network attacker could potentially run commands on the router, putting traffic, settings, and availability at risk. The official affected-product fields are incomplete, so confirm exposure by firmware inventory.
Executive priority
Treat this as urgent for exposed or business-critical routers because the CVSS profile indicates remote, unauthenticated full-impact compromise. Prioritize internet-facing devices first, then confirm whether affected firmware exists internally.
Technical view
The record identifies CWE-77 command injection through the country parameter in the delStaticDhcpRules setting path on TOTOlink A7100RU firmware V7.4cu.2313_B20191024. CVSS 3.1 is 9.8 with network attack vector, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where TOTOlink A7100RU routers run firmware V7.4cu.2313_B20191024 and their management surface is reachable from untrusted networks. The CVE affected-product fields are listed as n/a, so asset inventory is essential.
Exploitation context
The CVE is not listed as CISA KEV in the supplied bundle, and no cited source confirms active exploitation. Public technical reference material exists, which increases research visibility, but the bundle does not establish exploitation in the wild.
Researcher notes
The source data identifies the vulnerable model, firmware string, parameter, and setting path, but affected CPE and vendor fields are incomplete. Avoid broad product assumptions beyond TOTOlink A7100RU V7.4cu.2313_B20191024 unless confirmed by vendor or testing.
Mitigation direction
- Check TOTOlink guidance for fixed firmware or replacement advice.
- Remove router administration interfaces from internet exposure.
- Restrict management access to trusted networks and administrators.
- Prioritize replacement if no supported firmware is available.
- Monitor for unexpected configuration changes or device instability.
Validation and detection
- Inventory TOTOlink A7100RU devices and firmware versions.
- Confirm whether V7.4cu.2313_B20191024 is present.
- Verify management access is not exposed to untrusted networks.
- Review device logs for suspicious administrative activity.
- Track vendor advisories for patch or lifecycle status.
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-2023-24276 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Am1ngl/ttt/tree/main/18CVE reference
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.