Heap buffer overflow in Modbusgwd
Priority LOW 26CWE-122Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
In Teltonika Networks RUTOS devices, a vulnerability exists in modbusgwd due to improper handling of Modbus TCP request data. A remote, unauthenticated attacker with access to the affected service could trigger a heap-based buffer overflow, resulting in a denial of service.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00251 16th 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
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| Teltonika Networks | RUTOS | 7.12.0 – 7.24.1 | — | No fix listed | CNA |
- RUTOS VendorTeltonika Networks Affected 7.12.0 – 7.24.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18368
- 2026-10-03 Alias added: GHSA-26g8-9jvg-gfw6
More Teltonika Networks vulnerabilities
- TI-2025-04185 Account pre-hijacking through invite misuse CVSS 4.0HIGH 7.2
- TI-2023-15193 Teltonika RUT240 devices with firmware before 07.04.2, when bridge mode is used… CVSS 3.1HIGH 7.0
- TI-2024-07654 Incorrect Permission Assignment in RutOS based routers and TSWOS based managed switches CVSS 4.0MEDIUM 5.9
- TI-2020-04714 Cross-site request forgery in Teltonika Gateway TRB245 CVSS 3.1HIGH 8.8
- TI-2026-82959 Teltonika RUTOS API flaw lets unauthenticated users run OS commands CVSS 4.0CRITICAL 9.4
- TI-2023-15641 OS command injection in Teltonika RUT model routers CVSS 3.1HIGH 8.8
Sources
- CVE-2026-18368 · CVE Program
- CVE-2026-18368 · NVD
- FIRST EPSS
- GHSA-26g8-9jvg-gfw6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences