How severe is CVE-2024-40084?

CVE-2024-40084 has a CVSS 3.x base score of 9.6, rated critical 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-2024-40084 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40084?

CVE-2024-40084 affects Viloliving Vilo 5 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-40084?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-40084 have an EU (EUVD) identifier?

Yes. CVE-2024-40084 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38406.

When was CVE-2024-40084 published?

CVE-2024-40084 was published on 2024-10-21 and last updated on 2026-07-05.

CVE-2024-40084

CVE-2024-40084 is a critical-severity vulnerability in Viloliving Vilo 5 Firmware with a CVSS 3.x base score of 9.6. 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38406
Weakness: CWE-120
Affected product: Viloliving Vilo 5 Firmware
Published: 2024-10-21
Last modified: 2026-07-05

Description

A Buffer Overflow in the Boa webserver of Vilo 5 Mesh WiFi System <= 5.16.1.33 allows remote, unauthenticated attackers to execute arbitrary code via exceptionally long HTTP methods or paths.

Frequently asked questions

What is CVE-2024-40084?: A Buffer Overflow in the Boa webserver of Vilo 5 Mesh WiFi System <= 5.16.1.33 allows remote, unauthenticated attackers to execute arbitrary code via exceptionally long HTTP methods or paths.
How severe is CVE-2024-40084?: CVE-2024-40084 has a CVSS 3.x base score of 9.6, rated critical 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-2024-40084 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40084?: CVE-2024-40084 affects Viloliving Vilo 5 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-40084?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-40084 have an EU (EUVD) identifier?: Yes. CVE-2024-40084 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38406.
When was CVE-2024-40084 published?: CVE-2024-40084 was published on 2024-10-21 and last updated on 2026-07-05.

References

https://github.com/byu-cybersecurity-research/vilo/blob/main/vulns/CVE-2024-40084.md

EU advisories (EUVD)

http://vilo.com

Affected products (1)

cpe:2.3:o:viloliving:vilo_5_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Viloliving Vilo 5 Firmware

CVE-2024-40087 — Critical (CVSS 9.6): Vilo 5 Mesh WiFi System <= 5.16.1.33 is vulnerable to Insecure Permissions. Lack of authentication in the custom TCP…
CVE-2024-40089 — Critical (CVSS 9.1): A Command Injection vulnerability in Vilo 5 Mesh WiFi System <= 5.16.1.33 allows remote, authenticated attackers to…
CVE-2024-40091 — Medium (CVSS 5.3): Vilo 5 Mesh WiFi System <= 5.16.1.33 lacks authentication in the Boa webserver, which allows remote, unauthenticated…
CVE-2024-40088 — Medium (CVSS 5.3): A Directory Traversal vulnerability in the Boa webserver of Vilo 5 Mesh WiFi System <= 5.16.1.33 allows remote,…
CVE-2024-40090 — Medium (CVSS 4.3): Vilo 5 Mesh WiFi System <= 5.16.1.33 is vulnerable to Information Disclosure. An information leak in the Boa webserver…

All CVEs affecting Viloliving Vilo 5 Firmware →

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