How severe is CVE-2024-21780?

CVE-2024-21780 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-21780 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21780?

CVE-2024-21780 affects Kddi Home Spot Cube 2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21780?

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-2024-21780 have an EU (EUVD) identifier?

Yes. CVE-2024-21780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19394.

When was CVE-2024-21780 published?

CVE-2024-21780 was published on 2024-02-02 and last updated on 2026-06-17.

CVE-2024-21780

CVE-2024-21780 is a high-severity vulnerability in Kddi Home Spot Cube 2 Firmware with a CVSS 3.x base score of 7.5. 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 7.5)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-19394
Weakness: CWE-787
Affected product: Kddi Home Spot Cube 2 Firmware
Published: 2024-02-02
Last modified: 2026-06-17

Description

Stack-based buffer overflow vulnerability exists in HOME SPOT CUBE2 V102 and earlier. Processing a specially crafted command may result in a denial of service (DoS) condition. Note that the affected products are no longer supported.

Frequently asked questions

What is CVE-2024-21780?: Stack-based buffer overflow vulnerability exists in HOME SPOT CUBE2 V102 and earlier. Processing a specially crafted command may result in a denial of service (DoS) condition. Note that the affected products are no longer supported.
How severe is CVE-2024-21780?: CVE-2024-21780 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-21780 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21780?: CVE-2024-21780 affects Kddi Home Spot Cube 2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21780?: 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-2024-21780 have an EU (EUVD) identifier?: Yes. CVE-2024-21780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19394.
When was CVE-2024-21780 published?: CVE-2024-21780 was published on 2024-02-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:kddi:home_spot_cube_2_firmware:v102:*:*:*:*:*:*:*

More vulnerabilities in Kddi Home Spot Cube 2 Firmware

CVE-2024-23978 — Critical (CVSS 9.8): Heap-based buffer overflow vulnerability exists in HOME SPOT CUBE2 V102 and earlier. By processing invalid values,…
CVE-2022-33948 — High (CVSS 8.8): HOME SPOT CUBE2 V102 contains an OS command injection vulnerability due to improper processing of data received from…
CVE-2017-2186 — High (CVSS 8.8): HOME SPOT CUBE2 firmware V101 and earlier allows an attacker to bypass authentication to load malicious firmware via…
CVE-2017-2185 — High (CVSS 8.8): HOME SPOT CUBE2 firmware V101 and earlier allows authenticated attackers to execute arbitrary OS commands via WebUI.
CVE-2017-2184 — High (CVSS 8.8): Buffer overflow in HOME SPOT CUBE2 firmware V101 and earlier allows an attacker to execute arbitrary code via WebUI.
CVE-2017-2183 — High (CVSS 8.0): HOME SPOT CUBE2 firmware V101 and earlier allows authenticated attackers to execute arbitrary OS commands via Clock…

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