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

Routine

MEDIUM 6.5MITIGATE

CVE-2024-51409 is a medium-severity flaw (CVSS 6.5) affecting o3 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-120
Published	2024-11-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tenda

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-06 23:15 UTCPublished CVE record published
2026-06-17 08:05 UTCUpdated Record last modified

tenda o3 firmware MITIGATE

Affected: 1.0.0.5

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0.5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-51409?

o3 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-51409 being exploited?

CVE-2024-51409 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-51409 affect?

CVE-2024-51409 affects o3 firmware. Severity is medium (CVSS 6.5). 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 urgent is CVE-2024-51409?

Priority 37/100. Public exploit reference

Related CVEs

CVE-2025-7423 HIGH 8.8 MITIGATE A vulnerability classified as critical was found in Tenda O3V2 1.0.0.12(3880)
CVE-2025-7422 HIGH 8.8 MITIGATE A vulnerability classified as critical has been found in Tenda O3V2 1.0.0.12(3880)
CVE-2025-7421 HIGH 8.8 MITIGATE A vulnerability was found in Tenda O3V2 1.0.0.12(3880)
CVE-2025-7420 HIGH 8.8 MITIGATE A vulnerability was found in Tenda O3V2 1.0.0.12(3880)
CVE-2025-7419 HIGH 8.8 MITIGATE A vulnerability was found in Tenda O3V2 1.0.0.12(3880)

References

← Back to latest CVEs