Stack-based buffer overflow in LevelOne WBR-6013
Priority HIGH 67CWE-121Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.
Summary
A stack-based buffer overflow vulnerability exists in the boa formRoute functionality of Realtek rtl819x Jungle SDK v3.4.11. A specially crafted series of HTTP requests can lead to remote code execution. An attacker can send an HTTP request to trigger this vulnerability.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01283 70th 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
- Poc
- Automatable
- No
- 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 |
|---|---|---|---|---|---|
| LevelOne | WBR-6013 | RER4_A_v3411b_2T2R_LEV_09_170623 | — | No fix listed | CNA |
| Realtek | rtl819x Jungle SDK | v3.4.11 | — | No fix listed | CNA |
- WBR-6013 VendorLevelOne Affected RER4_A_v3411b_2T2R_LEV_09_170623 Fixed in — No fix listed CNA
- rtl819x Jungle SDK VendorRealtek Affected v3.4.11 Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:3.4.11:*:*:*:*:*:*:* | 3.4.11 | Vulnerable | Realtek |
| cpe:2.3:o:level1:wbr-6013_firmware:rer4_a_v3411b_2t2r_lev_09_170623:*:*:*:*:*:*:* | rer4_a_v3411b_2t2r_lev_09_170623 | Vulnerable | Level1 |
| cpe:2.3:h:level1:wbr-6013:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Level1 |
- cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:3.4.11:*:*:*:*:*:*:* Versions 3.4.11 Vulnerable ·Realtek
- cpe:2.3:o:level1:wbr-6013_firmware:rer4_a_v3411b_2t2r_lev_09_170623:*:*:*:*:*:*:* Versions rer4_a_v3411b_2t2r_lev_09_170623 Vulnerable ·Level1
- cpe:2.3:h:level1:wbr-6013:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Level1
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-41251
- 2026-10-03 Alias added: GHSA-9vwx-mwx6-73vm
- 2026-11-03 CISA SSVC decision points changed
References
More LevelOne vulnerabilities
- TI-2023-25181 Hard-coded credentials in LevelOne WBR-6013 CVSS 3.1CRITICAL 9.8
- TI-2024-22280 The LevelOne WBR-6012 router's web application has a vulnerability in its firmware… CVSS 3.1CRITICAL 9.9
- TI-2024-15413 The LevelOne WBR-6012 router with firmware R0.40e6 has an authentication bypass… CVSS 3.1CRITICAL 9.0
- TI-2024-16294 Cross-site request forgery in LevelOne WBR-6012 CVSS 3.1HIGH 8.8
- TI-2023-25815 Cross-site request forgery in LevelOne WBR-6013 CVSS 3.1HIGH 8.8
- TI-2024-22281 Improper input validation in LevelOne WBR-6012 CVSS 3.1HIGH 7.5
Sources
- CVE-2023-41251 · CVE Program
- CVE-2023-41251 · NVD
- FIRST EPSS
- GHSA-9vwx-mwx6-73vm · 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