How severe is CVE-2026-4974?

CVE-2026-4974 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-4974 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4974?

CVE-2026-4974 affects Tenda Ac7 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4974?

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-2026-4974 have an EU (EUVD) identifier?

Yes. CVE-2026-4974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16809.

When was CVE-2026-4974 published?

CVE-2026-4974 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-4974

CVE-2026-4974 is a high-severity vulnerability in Tenda Ac7 Firmware with a CVSS 3.x base score of 8.8. 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16809
Weakness: CWE-787
Affected product: Tenda Ac7 Firmware
Published: 2026-03-27
Last modified: 2026-06-17

Description

A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation of the argument Time can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.

Frequently asked questions

What is CVE-2026-4974?: A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation of the argument Time can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.
How severe is CVE-2026-4974?: CVE-2026-4974 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-4974 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4974?: CVE-2026-4974 affects Tenda Ac7 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4974?: 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-2026-4974 have an EU (EUVD) identifier?: Yes. CVE-2026-4974 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16809.
When was CVE-2026-4974 published?: CVE-2026-4974 was published on 2026-03-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ac7_firmware:15.03.06.44:*:*:*:*:*:*:*

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