How severe is CVE-2025-52089?

CVE-2025-52089 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-52089 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-52089?

CVE-2025-52089 affects Totolink N300rb Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-52089?

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-2025-52089 have an EU (EUVD) identifier?

Yes. CVE-2025-52089 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21164.

When was CVE-2025-52089 published?

CVE-2025-52089 was published on 2025-07-11 and last updated on 2026-06-17.

CVE-2025-52089

CVE-2025-52089 is a high-severity vulnerability in Totolink N300rb 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-306.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-21164
Weakness: CWE-306
Affected product: Totolink N300rb Firmware
Published: 2025-07-11
Last modified: 2026-06-17

Description

A hidden remote support feature protected by a static secret in TOTOLINK N300RB firmware version 8.54 allows an authenticated attacker to execute arbitrary OS commands with root privileges.

Frequently asked questions

What is CVE-2025-52089?: A hidden remote support feature protected by a static secret in TOTOLINK N300RB firmware version 8.54 allows an authenticated attacker to execute arbitrary OS commands with root privileges.
How severe is CVE-2025-52089?: CVE-2025-52089 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-52089 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-52089?: CVE-2025-52089 affects Totolink N300rb Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-52089?: 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-2025-52089 have an EU (EUVD) identifier?: Yes. CVE-2025-52089 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21164.
When was CVE-2025-52089 published?: CVE-2025-52089 was published on 2025-07-11 and last updated on 2026-06-17.

References

https://0x09.dev/posts/toto_decouvre_une_interface_de_debug/

Affected products (1)

cpe:2.3:o:totolink:n300rb_firmware:8.54:*:*:*:*:*:*:*

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