CVE-2024-6146
CVE-2024-6146 is a high-severity vulnerability in Actiontec Wcb6200q Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 1% (62nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-47290
- Weakness: CWE-787
- Affected product: Actiontec Wcb6200q Firmware
- Published:
- Last modified:
Description
Actiontec WCB6200Q uh_get_postdata_withupload Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Actiontec WCB6200Q routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP server. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the HTTP server. Was ZDI-CAN-21418.
Frequently asked questions
- What is CVE-2024-6146?
- Actiontec WCB6200Q uh_get_postdata_withupload Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Actiontec WCB6200Q routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP server. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the HTTP server. Was ZDI-CAN-21418.
- How severe is CVE-2024-6146?
- CVE-2024-6146 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-6146 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-6146?
- CVE-2024-6146 affects Actiontec Wcb6200q Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-6146?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-6146 have an EU (EUVD) identifier?
- Yes. CVE-2024-6146 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-47290.
- When was CVE-2024-6146 published?
- CVE-2024-6146 was published on 2024-06-19 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:actiontec:wcb6200q_firmware:1.2l.03.5:*:*:*:*:*:*:*
More vulnerabilities in Actiontec Wcb6200q Firmware
- CVE-2024-6145 — High (CVSS 8.8): Actiontec WCB6200Q Cookie Format String Remote Code Execution Vulnerability. This vulnerability allows network-adjacent…
- CVE-2024-6144 — High (CVSS 8.8): Actiontec WCB6200Q Multipart Boundary Stack-based Buffer Overflow Remote Code Execution Vulnerability. This…
- CVE-2024-6143 — High (CVSS 8.8): Actiontec WCB6200Q uh_tcp_recv_header Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows…
- CVE-2024-6142 — High (CVSS 8.8): Actiontec WCB6200Q uh_tcp_recv_content Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows…
- CVE-2018-10252 — High (CVSS 8.1): An issue was discovered on Actiontec WCB6200Q before 1.1.10.20a devices. The admin login session cookie is insecurely…
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