# CVE-2023-41251: CVE-2023-41251

Status: published. Published: 2024-07-08. Updated: 2026-11-03.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- LevelOne / WBR-6013: RER4_A_v3411b_2T2R_LEV_09_170623 (affected). Source: CNA: talos
- Realtek / rtl819x Jungle SDK: v3.4.11 (affected). Source: CNA: talos
- level_one / wbr6013: rer4_a_v3411b_2t2r_lev_09_170623 (affected). Source: ADP: CISA-ADP
- realtek / rtl819x_software_development_kit: 3.4.11 (affected). Source: ADP: CISA-ADP

## NVD configuration conditions

Affected CPE matches depend on the following AND/OR and negation conditions:

```json
[
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:realtek:rtl819x_jungle_software_development_kit:3.4.11:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "OR"
  },
  {
    "negate": false,
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:level1:wbr-6013_firmware:rer4_a_v3411b_2t2r_lev_09_170623:*:*:*:*:*:*:*",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      },
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:level1:wbr-6013:-:*:*:*:*:*:*:*",
            "vulnerable": false
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ],
    "operator": "AND"
  }
]
```

## Severity and prioritization

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: CNA: talos

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: NVD: nvd@nist.gov

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: NVD: talos-cna@cisco.com

- CISA KEV: No listing in collected sources

- EPSS: 1.28% as of 2026-11-03; percentile 70.12%

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-121, CWE-787

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://talosintelligence.com/vulnerability_reports/TALOS-2023-1894 (CNA: talos)

- https://talosintelligence.com/vulnerability_reports/TALOS-2023-1894 (ADP: CVE; x_transferred)

- https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1894 (ADP: CVE)

- https://talosintelligence.com/vulnerability_reports/TALOS-2023-1894 (talos-cna@cisco.com; Third Party Advisory)

- https://talosintelligence.com/vulnerability_reports/TALOS-2023-1894 (af854a3a-2127-422b-91ae-364da2661108; Third Party Advisory)

- https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1894 (af854a3a-2127-422b-91ae-364da2661108)

## Provenance

- CNA: talos: https://www.cve.org/CVERecord?id=CVE-2023-41251; retrieved 2026-11-04; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-41251; retrieved 2026-11-04; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-41251; retrieved 2026-11-03; source updated Not reported

Revision: 02a8f05bbc55ac1c010b0b44f4d477b04d6118d2350afaf92c136f1ddac29829

Canonical: https://y2.dev/cve/CVE-2023-41251

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.