Security readout for executives and security teams
Plain-English summary
This CVE describes command injection in a TOTOLINK CP900L firmware function that handles time synchronization. An unauthenticated attacker on an adjacent network could send a crafted request and run arbitrary commands on the device. The source bundle does not name a vendor patch or report active exploitation.
Executive priority
Treat this as high priority for environments using the named router firmware, especially where device administration is reachable from shared or untrusted networks. Prioritize inventory, isolation, and vendor-fix verification.
Technical view
CVE-2024-35397 affects TOTOLINK CP900L v4.1.5cu.798_B20221228 in NTPSyncWithHost through the hostTime parameter. It is classified as CWE-77 command injection with CVSS 3.1 score 8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Likely exposure
Exposure is most likely where CP900L devices with the named firmware are reachable from untrusted LAN, Wi-Fi, or adjacent network segments. The bundle’s structured affected fields are incomplete, so inventory confirmation is required.
Exploitation context
The CVE states arbitrary command execution is possible via a crafted request. KEV is false, and the provided sources do not support claiming known active exploitation in the wild.
Researcher notes
Evidence is limited to the CVE record and a public vulnerability report reference. The CVSS adjacent-network vector is important: do not assume internet-wide exploitability without additional source evidence.
Mitigation direction
- Identify any TOTOLINK CP900L devices and firmware versions in use.
- Check TOTOLINK guidance for fixed firmware or official mitigation.
- Restrict management access to trusted administrative networks only.
- Remove access from guest Wi-Fi and untrusted adjacent segments.
- Replace or isolate affected devices if no vendor fix is available.
Validation and detection
- Confirm whether devices run v4.1.5cu.798_B20221228 firmware.
- Review network paths to device management interfaces.
- Check logs for unusual time-sync or management requests.
- Verify KEV status remains absent before reporting active exploitation.
- Document any vendor advisory or firmware response found.
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-2024-35397 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/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.
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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
- https://github.com/s4ndw1ch136/IOT-vuln-reports/blob/main/TOTOLINK%20CP900L/NTPSyncWithHost/README.mdCVE reference, mitre
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.