Improper access control in Moxa
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.
Summary
An exploitable privilege escalation vulnerability exists in the iw_console functionality of the Moxa AWK-3131A firmware version 1.13. A specially crafted menu selection string can cause an escape from the restricted console, resulting in system access as the root user. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Moxa | Moxa AWK-3131A Firmware version 1.13 | — | No fix listed | CNA |
- Moxa Vendor— Affected Moxa AWK-3131A Firmware version 1.13 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-5136
- 2026-10-03 Alias added: GHSA-2843-q9jg-f7rg
References
More Moxa Awk-3131a Firmware vulnerabilities
- TI-2017-10565 OS command injection in Talos Moxa CVSS 3.0CRITICAL 10.0
- TI-2019-03594 OS command injection in Moxa CVSS 3.1CRITICAL 9.9
- TI-2016-06872 Access control flaw in Moxa OnCell CVSS 3.0CRITICAL 10.0
- TI-2019-03597 OS command injection in Moxa CVSS 3.1HIGH 8.8
- TI-2016-07174 Hard-coded credentials in Talos Moxa CVSS 3.1CRITICAL 9.8
- TI-2019-03609 Stack-based buffer overflow in Moxa CVSS 3.1HIGH 8.8
Sources
- CVE-2019-5136 · CVE Program
- CVE-2019-5136 · NVD
- FIRST EPSS
- GHSA-2843-q9jg-f7rg · GitHub Advisory Database · CC BY 4.0
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