Security readout for executives and security teams
Plain-English summary
CVE-2023-24236 is a critical command injection flaw reported in TOTOlink A7100RU firmware V7.4cu.2313_B20191024. If an exposed vulnerable interface is reachable, an unauthenticated network attacker could potentially run system commands on the router.
Executive priority
Prioritize discovery and isolation now. The vulnerability has a critical CVSS score and requires no authentication or user interaction, but the public sources do not confirm active exploitation or a vendor patch. Exposure management should focus on finding affected routers and reducing reachable management surfaces.
Technical view
The CVE describes CWE-77 command injection through the province parameter at setting/delStaticDhcpRules. The CVSS v3.1 score is 9.8, with network attack vector, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Likely exposure is organizations or homes using TOTOlink A7100RU devices on firmware V7.4cu.2313_B20191024, particularly where the management/API surface is reachable from untrusted networks. The source bundle does not provide complete vendor/product CPE metadata.
Exploitation context
The CVE is not marked as CISA KEV in the provided bundle. A public GitHub reference is listed, but the bundle does not establish active exploitation in the wild. Treat public technical availability as increasing validation and remediation urgency.
Researcher notes
Key uncertainty is product metadata quality: the source bundle lists vendor/product as n/a while the description names TOTOlink A7100RU firmware V7.4cu.2313_B20191024. Do not broaden affected scope beyond that evidence without vendor confirmation.
Mitigation direction
- Identify any TOTOlink A7100RU devices running V7.4cu.2313_B20191024.
- Check TOTOlink or device supplier guidance for firmware updates or replacement advice.
- Restrict router management access to trusted administrative networks only.
- Block WAN-side access to administrative interfaces where present.
- Replace unsupported affected devices if no vendor fix is available.
Validation and detection
- Inventory router models and firmware versions against the named affected firmware.
- Confirm administrative interfaces are not reachable from the internet or guest networks.
- Review router logs for unexpected configuration or static DHCP rule changes.
- Track vendor advisories and the CVE record for corrected affected-version metadata.
- Prioritize testing in an isolated lab; avoid production probing beyond approved checks.
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-2023-24236 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/19CVE 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.