Security readout for executives and security teams
Plain-English summary
Certain ELECOM wireless LAN routers can let a nearby network attacker with valid credentials run operating system commands on the device. That can compromise the router and potentially traffic flowing through it. The sources do not state active exploitation.
Executive priority
Treat this as a high-priority network infrastructure issue where affected ELECOM devices are deployed. Urgency is highest for business-critical sites or networks where router compromise would affect operations, customer connectivity, or security monitoring.
Technical view
CVE-2024-26258 is a CWE-78 OS command injection flaw in listed ELECOM router firmware. The CVSS 3.1 score is 7.1, with adjacent-network access, high attack complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to the listed ELECOM models running affected firmware versions or earlier. The attacker must be network-adjacent and possess credentials. The source bundle does not establish internet exposure, unauthenticated access, or impact on other ELECOM products.
Exploitation context
No CISA KEV listing is indicated, and the provided sources do not claim active exploitation. The vulnerability is still serious because successful command execution on a router can undermine network trust, routing, DNS, and local monitoring assumptions.
Researcher notes
Evidence supports command injection with authenticated adjacent-network access on specific ELECOM firmware versions. The bundle lacks exploit details, patch version numbers, and telemetry on exploitation. Avoid broad product assumptions beyond the listed models.
Mitigation direction
- Check ELECOM and JVN guidance for fixed firmware or vendor-directed remediation.
- Prioritize affected routers used in business, branch, or managed Wi-Fi networks.
- Restrict administrative access to trusted management networks only.
- Review and harden router credentials, especially shared or default-like accounts.
- Replace or isolate devices that cannot be remediated promptly.
Validation and detection
- Inventory ELECOM router models and firmware versions across managed networks.
- Compare findings against the affected model and version list.
- Confirm administrative interfaces are not reachable from untrusted segments.
- Review router access records for unexpected authenticated administration, if available.
- Track remediation status for each affected device until vendor guidance is applied.
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-2024-26258 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:H/PR:L/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
2 official scoresWe 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:H/PR:L/UI:N/S:U/C:H/I:H/A:H1.25.9CISA-ADPCVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.95.9jpcertVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Base CVSS 3.0 score
6.8MediumVector: CVSS:3.0/AV:A/AC:L/PR:H/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://www.elecom.co.jp/news/security/20240326-01/CVE reference, jpcert
- https://jvn.jp/en/vu/JVNVU95381465/CVE reference, jpcert
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.