How severe is CVE-2026-51846?

CVE-2026-51846 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-51846 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-51846?

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-2026-51846 have an EU (EUVD) identifier?

Yes. CVE-2026-51846 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38052.

When was CVE-2026-51846 published?

CVE-2026-51846 was published on 2026-06-19 and last updated on 2026-06-22.

CVE-2026-51846

CVE-2026-51846 is a critical-severity vulnerability with a CVSS 3.x base score of 9.8. 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-121.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38052
Weakness: CWE-121
Published: 2026-06-19
Last modified: 2026-06-22

Description

In Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can lead to remote arbitrary code execution.

Frequently asked questions

What is CVE-2026-51846?: In Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can lead to remote arbitrary code execution.
How severe is CVE-2026-51846?: CVE-2026-51846 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-51846 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-51846?: 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-2026-51846 have an EU (EUVD) identifier?: Yes. CVE-2026-51846 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38052.
When was CVE-2026-51846 published?: CVE-2026-51846 was published on 2026-06-19 and last updated on 2026-06-22.

References

https://www.kdev.site/cve-request_005/

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