How severe is CVE-2025-6542?

CVE-2025-6542 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-2025-6542 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6542?

CVE-2025-6542 primarily affects Tp-link Er8411 Firmware. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-6542?

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-2025-6542 have an EU (EUVD) identifier?

Yes. CVE-2025-6542 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35117.

When was CVE-2025-6542 published?

CVE-2025-6542 was published on 2025-10-21 and last updated on 2026-06-17.

CVE-2025-6542

CVE-2025-6542 is a critical-severity vulnerability in Tp-link Er8411 Firmware 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-35117
Weakness: CWE-78
Affected product: Tp-link Er8411 Firmware
Published: 2025-10-21
Last modified: 2026-06-17

Description

An arbitrary OS command may be executed on the product by a remote unauthenticated attacker.

Frequently asked questions

What is CVE-2025-6542?: An arbitrary OS command may be executed on the product by a remote unauthenticated attacker.
How severe is CVE-2025-6542?: CVE-2025-6542 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-2025-6542 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6542?: CVE-2025-6542 primarily affects Tp-link Er8411 Firmware. In total, 26 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-6542?: 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-2025-6542 have an EU (EUVD) identifier?: Yes. CVE-2025-6542 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35117.
When was CVE-2025-6542 published?: CVE-2025-6542 was published on 2025-10-21 and last updated on 2026-06-17.

References

Affected products (26)

cpe:2.3:o:tp-link:er8411_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er8411_firmware:1.3.3:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7412-m2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7412-m2_firmware:1.1.0:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:er707-m2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er707-m2_firmware:1.3.1:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7206_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7206_firmware:2.2.2:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:er605_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er605_firmware:2.3.1:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:er706w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er706w_firmware:1.2.1:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:er706w-4g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er706w-4g_firmware:1.2.1:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7212pc_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:er7212pc_firmware:2.1.3:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:g36_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:g36_firmware:1.1.4:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:g611_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:g611_firmware:1.2.2:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:fr365_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:fr365_firmware:1.1.10:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:fr205_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:fr205_firmware:1.0.3:-:*:*:*:*:*:*
cpe:2.3:o:tp-link:fr307-m2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:fr307-m2_firmware:1.2.5:-:*:*:*:*:*:*

More vulnerabilities in Tp-link Er8411 Firmware

CVE-2025-7851 — Critical (CVSS 9.8): An attacker may obtain the root shell on the underlying OS system with the restricted conditions on Omada gateways.
CVE-2025-6541 — High (CVSS 8.8): An arbitrary OS command may be executed on the product by the user who can log in to the web management interface.
CVE-2025-7850 — High (CVSS 7.2): A command injection vulnerability may be exploited after the admin's authentication on the web portal on Omada gateways.
CVE-2025-9290 — Medium (CVSS 5.9): An authentication weakness was identified in Omada Controllers, Gateways and Access Points, controller-device adoption…

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