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 formWsc 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 a series of HTTP requests to trigger this vulnerability.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01101 65th 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-2023-49867
- 2026-10-03 Alias added: GHSA-v693-ww24-qwmw
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-2023-49867 · CVE Program
- CVE-2023-49867 · NVD
- FIRST EPSS
- GHSA-v693-ww24-qwmw · 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