How severe is CVE-2025-9781?

CVE-2025-9781 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-2025-9781 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9781?

CVE-2025-9781 affects Totolink A702r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9781?

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-2025-9781 have an EU (EUVD) identifier?

Yes. CVE-2025-9781 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26345.

When was CVE-2025-9781 published?

CVE-2025-9781 was published on 2025-09-01 and last updated on 2026-06-17.

CVE-2025-9781

CVE-2025-9781 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% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-26345
Weakness: CWE-119
Affected product: Totolink A702r Firmware
Published: 2025-09-01
Last modified: 2026-06-17

Description

A vulnerability has been found in TOTOLINK A702R 4.0.0-B20211108.1423. This affects the function sub_4162DC of the file /boafrm/formFilter. Such manipulation of the argument ip6addr leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-9781?: A vulnerability has been found in TOTOLINK A702R 4.0.0-B20211108.1423. This affects the function sub_4162DC of the file /boafrm/formFilter. Such manipulation of the argument ip6addr leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-9781?: CVE-2025-9781 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-2025-9781 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9781?: CVE-2025-9781 affects Totolink A702r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9781?: 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-2025-9781 have an EU (EUVD) identifier?: Yes. CVE-2025-9781 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-26345.
When was CVE-2025-9781 published?: CVE-2025-9781 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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