Security readout for executives and security teams
Plain-English summary
This CVE describes a critical command injection flaw in TOTOLINK CA300-PoE firmware V6.2c.884. If reachable, an unauthenticated attacker could potentially run system commands through the device’s NTP host-time handling, risking full compromise of the appliance and networks that trust it.
Executive priority
Treat this as urgent for any exposed or business-critical TOTOLINK CA300-PoE deployment. Prioritize discovery, network restriction, and vendor update review, because the reported impact is full device compromise and the available source bundle does not confirm a patch status.
Technical view
CVE-2023-24138 is reported as CWE-77 command injection in the host_time parameter of NTPSyncWithHost on TOTOLINK CA300-PoE V6.2c.884. The CVSS 3.1 score is 9.8 with network attack vector, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely where TOTOLINK CA300-PoE V6.2c.884 management or affected NTP synchronization functionality is reachable over a network, especially from untrusted networks. The source bundle does not provide CPEs, deployment prevalence, or a confirmed vendor fix.
Exploitation context
The CVE is not listed as KEV in the provided data, and the bundle does not confirm active exploitation. Public technical details are referenced, so defenders should assume capable attackers can understand the vulnerable input path without treating exploitation as proven in the wild.
Researcher notes
Evidence is sufficient for vulnerability classification but incomplete for asset matching and remediation. The CVE record names the affected model and version, while structured affected vendor/product/CPE fields are n/a. Avoid asserting active exploitation or fixed versions without additional vendor or threat-intelligence evidence.
Mitigation direction
- Identify CA300-PoE devices and confirm whether firmware V6.2c.884 is present.
- Check TOTOLINK guidance for fixed firmware or official workarounds.
- Remove internet exposure for device management and related administrative services.
- Restrict access to trusted management networks or VPN-only paths.
- Monitor affected devices for suspicious configuration or process activity.
Validation and detection
- Inventory TOTOLINK CA300-PoE assets and record firmware versions.
- Verify scanners map findings specifically to CVE-2023-24138.
- Review firewall rules for untrusted access to device management interfaces.
- Check logs for unusual administrative or NTP synchronization activity if available.
- Document whether vendor guidance or firmware updates exist for each device.
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-2023-24138 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
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.