How severe is CVE-2025-9780?

CVE-2025-9780 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-2025-9780 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9780?

CVE-2025-9780 affects Totolink A702r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9780?

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-2025-9780 have an EU (EUVD) identifier?

Yes. CVE-2025-9780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26402.

When was CVE-2025-9780 published?

CVE-2025-9780 was published on 2025-09-01 and last updated on 2026-06-17.

CVE-2025-9780

CVE-2025-9780 is a high-severity vulnerability in Totolink A702r 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% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26402
Weakness: CWE-119
Affected product: Totolink A702r Firmware
Published: 2025-09-01
Last modified: 2026-06-17

Description

A flaw has been found in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this issue is the function sub_419BE0 of the file /boafrm/formIpQoS. This manipulation of the argument mac causes buffer overflow. The attack can be initiated remotely. The exploit has been published and may be used.

Frequently asked questions

What is CVE-2025-9780?: A flaw has been found in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this issue is the function sub_419BE0 of the file /boafrm/formIpQoS. This manipulation of the argument mac causes buffer overflow. The attack can be initiated remotely. The exploit has been published and may be used.
How severe is CVE-2025-9780?: CVE-2025-9780 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-2025-9780 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9780?: CVE-2025-9780 affects Totolink A702r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9780?: 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-2025-9780 have an EU (EUVD) identifier?: Yes. CVE-2025-9780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26402.
When was CVE-2025-9780 published?: CVE-2025-9780 was published on 2025-09-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:a702r_firmware:4.0.0-b20211108.1423:*:*:*:*:*:*:*

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