How severe is CVE-2026-4553?

CVE-2026-4553 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-2026-4553 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4553?

CVE-2026-4553 affects Tenda F453 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4553?

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-2026-4553 have an EU (EUVD) identifier?

Yes. CVE-2026-4553 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14317.

When was CVE-2026-4553 published?

CVE-2026-4553 was published on 2026-03-22 and last updated on 2026-06-17.

CVE-2026-4553

CVE-2026-4553 is a high-severity vulnerability in Tenda F453 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14317
Weakness: CWE-119
Affected product: Tenda F453 Firmware
Published: 2026-03-22
Last modified: 2026-06-17

Description

A vulnerability was identified in Tenda F453 1.0.0.3. Impacted is the function fromNatlimit of the file /goform/Natlimit of the component Parameters Handler. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Frequently asked questions

What is CVE-2026-4553?: A vulnerability was identified in Tenda F453 1.0.0.3. Impacted is the function fromNatlimit of the file /goform/Natlimit of the component Parameters Handler. The manipulation of the argument page leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.
How severe is CVE-2026-4553?: CVE-2026-4553 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-2026-4553 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4553?: CVE-2026-4553 affects Tenda F453 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4553?: 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-2026-4553 have an EU (EUVD) identifier?: Yes. CVE-2026-4553 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14317.
When was CVE-2026-4553 published?: CVE-2026-4553 was published on 2026-03-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:f453_firmware:1.0.0.3:*:*:*:*:*:*:*

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