Security readout for executives and security teams
Plain-English summary
This flaw affects the web management component in listed Realtek SDK-based router firmware. An attacker with high privileges could send crafted HTTP requests that corrupt memory and potentially run code on the device. Business urgency is highest where affected router administration interfaces are reachable beyond tightly controlled networks.
Executive priority
Treat this as a high-priority network edge risk when affected firmware is present. It is not confirmed as actively exploited here, but successful exploitation could compromise router confidentiality, integrity, and availability.
Technical view
CVE-2023-50330 is a CWE-121 stack-based buffer overflow in the boa getInfo functionality of Realtek rtl819x Jungle SDK v3.4.11. Talos reports that a specially crafted series of HTTP requests can lead to remote code execution. CVSS is 7.2 with network access, low complexity, high privileges, and full CIA impact.
Likely exposure
Known exposure is LevelOne WBR-6013 firmware RER4_A_v3411b_2T2R_LEV_09_170623 and Realtek rtl819x Jungle SDK v3.4.11. Other exposure should be confirmed through vendor or firmware evidence, not assumed from this bundle alone.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. They do support remote code execution potential through crafted HTTP requests, with high privileges required and no user interaction.
Researcher notes
The key constraints are PR:H and the specific boa getInfo path in Realtek rtl819x Jungle SDK v3.4.11. Avoid broad product claims unless firmware analysis confirms the affected SDK and functionality are present.
Mitigation direction
- Check LevelOne and Realtek guidance for fixed firmware or supported remediation.
- Prioritize replacement or isolation if no vendor-supported update is available.
- Restrict web administration access to trusted management networks only.
- Remove internet exposure for affected router management interfaces.
- Review privileged administrator access and reduce unnecessary accounts.
Validation and detection
- Inventory LevelOne WBR-6013 devices and record firmware versions.
- Confirm whether firmware includes Realtek rtl819x Jungle SDK v3.4.11.
- Check whether boa web management is enabled and reachable.
- Verify administration interfaces are not exposed to untrusted networks.
- Review device logs for unusual authenticated web management activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-121: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-50330 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.