How severe is CVE-2024-51409?

CVE-2024-51409 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-51409 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-51409?

CVE-2024-51409 affects Tenda O3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-51409?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-51409 have an EU (EUVD) identifier?

Yes. CVE-2024-51409 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45344.

When was CVE-2024-51409 published?

CVE-2024-51409 was published on 2024-11-06 and last updated on 2026-06-17.

CVE-2024-51409

CVE-2024-51409 is a medium-severity vulnerability in Tenda O3 Firmware with a CVSS 3.x base score of 6.5. 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-45344
Weakness: CWE-120
Affected product: Tenda O3 Firmware
Published: 2024-11-06
Last modified: 2026-06-17

Description

Buffer Overflow vulnerability in Tenda O3 v.1.0.0.5 allows a remote attacker to cause a denial of service via a network packet in a fixed format to a router running the corresponding version of the firmware.

Frequently asked questions

What is CVE-2024-51409?: Buffer Overflow vulnerability in Tenda O3 v.1.0.0.5 allows a remote attacker to cause a denial of service via a network packet in a fixed format to a router running the corresponding version of the firmware.
How severe is CVE-2024-51409?: CVE-2024-51409 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-51409 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-51409?: CVE-2024-51409 affects Tenda O3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-51409?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-51409 have an EU (EUVD) identifier?: Yes. CVE-2024-51409 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-45344.
When was CVE-2024-51409 published?: CVE-2024-51409 was published on 2024-11-06 and last updated on 2026-06-17.

References

https://github.com/fireknight-hJ/Tenda-cve-pocs/blob/main/Tenda%20O3V1.0.0.5%284180%29/websReadEvent.md

Affected products (1)

cpe:2.3:o:tenda:o3_firmware:1.0.0.5:*:*:*:*:*:*:*

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CVE-2025-55613 — Critical (CVSS 9.8): Tenda O3V2 1.0.0.12(3880) is vulnerable to Buffer Overflow in the fromSafeSetMacFilter function via the mac parameter.
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