How severe is CVE-2025-8136?

CVE-2025-8136 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-2025-8136 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-8136?

CVE-2025-8136 affects Totolink A702r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-8136?

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-2025-8136 have an EU (EUVD) identifier?

Yes. CVE-2025-8136 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22574.

When was CVE-2025-8136 published?

CVE-2025-8136 was published on 2025-07-25 and last updated on 2026-06-17.

CVE-2025-8136

CVE-2025-8136 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-22574
Weakness: CWE-120
Affected product: Totolink A702r Firmware
Published: 2025-07-25
Last modified: 2026-06-17

Description

A vulnerability, which was classified as critical, was found in TOTOLINK A702R 4.0.0-B20230721.1521. Affected is an unknown function of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation of the argument ip6addr leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-8136?: A vulnerability, which was classified as critical, was found in TOTOLINK A702R 4.0.0-B20230721.1521. Affected is an unknown function of the file /boafrm/formFilter of the component HTTP POST Request Handler. The manipulation of the argument ip6addr leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-8136?: CVE-2025-8136 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-2025-8136 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-8136?: CVE-2025-8136 affects Totolink A702r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-8136?: 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-2025-8136 have an EU (EUVD) identifier?: Yes. CVE-2025-8136 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22574.
When was CVE-2025-8136 published?: CVE-2025-8136 was published on 2025-07-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:a702r_firmware:4.0.0-b20230721.1521:*:*:*:*:*:*:*

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