OS command injection in ELECOM CO.,LTD. WRH-733GBK
Priority MEDIUM 52CWE-78Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
WRH-733GBK and WRH-733GWH contain an improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability in the telnet function. If a remote unauthenticated attacker sends a specially crafted request to the affected product, an arbitrary OS command may be executed.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02158 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ELECOM CO.,LTD. | WRH-733GBK | all versions | — | No fix listed | CNA |
| ELECOM CO.,LTD. | WRH-733GWH | all versions | — | No fix listed | CNA |
- WRH-733GBK VendorELECOM CO.,LTD. Affected all versions Fixed in — No fix listed CNA
- WRH-733GWH VendorELECOM CO.,LTD. Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-43879
- 2026-10-03 Alias added: GHSA-pg9g-gj66-h46r
References
More ELECOM CO.,LTD. vulnerabilities
- TI-2023-19165 Command injection in ELECOM CO.,LTD. WRC-1167GHBK3-A CVSS 3.1CRITICAL 9.8
- TI-2025-31040 OS command injection in ELECOM CO.,LTD. WRH-733GBK CVSS 4.0CRITICAL 9.3
- TI-2023-20954 OS command injection in ELECOM CO.,LTD. WRC-F1167ACF CVSS 3.1CRITICAL 9.8
- TI-2026-30435 OS command injection in ELECOM CO.,LTD. WRC-BE72XSD-B CVSS 4.0CRITICAL 9.3
- TI-2026-29353 Authentication bypass in ELECOM CO.,LTD. WRC-BE72XSD-B CVSS 4.0CRITICAL 9.3
- TI-2026-19720 Stack-based buffer overflow in ELECOM CO.,LTD. WAB-S733IW2-PD CVSS 4.0CRITICAL 9.3
Sources
- CVE-2025-43879 · CVE Program
- CVE-2025-43879 · NVD
- FIRST EPSS
- GHSA-pg9g-gj66-h46r · GitHub Advisory Database · CC BY 4.0
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