How severe is CVE-2025-67189?

CVE-2025-67189 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-67189 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67189?

CVE-2025-67189 affects Totolink A950rg Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-67189?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-67189 have an EU (EUVD) identifier?

Yes. CVE-2025-67189 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206722.

When was CVE-2025-67189 published?

CVE-2025-67189 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2025-67189

CVE-2025-67189 is a medium-severity vulnerability in Totolink A950rg Firmware with a CVSS 3.x base score of 6.5. 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206722
Weakness: CWE-120
Affected product: Totolink A950rg Firmware
Published: 2026-02-03
Last modified: 2026-06-17

Description

A buffer overflow vulnerability exists in the setParentalRules interface of TOTOLINK A950RG V4.1.2cu.5204_B20210112. The urlKeyword parameter is not properly validated, and the function concatenates multiple user-controlled fields into a fixed-size stack buffer without performing boundary checks. A remote attacker can exploit this flaw to cause denial of service or potentially achieve arbitrary code execution.

Frequently asked questions

What is CVE-2025-67189?: A buffer overflow vulnerability exists in the setParentalRules interface of TOTOLINK A950RG V4.1.2cu.5204_B20210112. The urlKeyword parameter is not properly validated, and the function concatenates multiple user-controlled fields into a fixed-size stack buffer without performing boundary checks. A remote attacker can exploit this flaw to cause denial of service or potentially achieve arbitrary code execution.
How severe is CVE-2025-67189?: CVE-2025-67189 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-67189 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67189?: CVE-2025-67189 affects Totolink A950rg Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-67189?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-67189 have an EU (EUVD) identifier?: Yes. CVE-2025-67189 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206722.
When was CVE-2025-67189 published?: CVE-2025-67189 was published on 2026-02-03 and last updated on 2026-06-17.

References

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A950RG/5024-setParentRules-urlKeyWord-buffer.md

Affected products (1)

cpe:2.3:o:totolink:a950rg_firmware:4.1.2cu.5204_b20210112:*:*:*:*:*:*:*

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