How severe is CVE-2025-4833?

CVE-2025-4833 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-2025-4833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4833?

CVE-2025-4833 primarily affects Totolink A702r Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-4833?

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-2025-4833 have an EU (EUVD) identifier?

Yes. CVE-2025-4833 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15594.

When was CVE-2025-4833 published?

CVE-2025-4833 was published on 2025-05-17 and last updated on 2026-06-17.

CVE-2025-4833

CVE-2025-4833 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: 8.7
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15594
Weakness: CWE-120
Affected product: Totolink A702r Firmware
Published: 2025-05-17
Last modified: 2026-06-17

Description

A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615 and classified as critical. This issue affects some unknown processing of the file /boafrm/formNtp of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-4833?: A vulnerability was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615 and classified as critical. This issue affects some unknown processing of the file /boafrm/formNtp of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-4833?: CVE-2025-4833 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-2025-4833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4833?: CVE-2025-4833 primarily affects Totolink A702r Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-4833?: 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-2025-4833 have an EU (EUVD) identifier?: Yes. CVE-2025-4833 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15594.
When was CVE-2025-4833 published?: CVE-2025-4833 was published on 2025-05-17 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:totolink:a702r_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a3002r_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:*
cpe:2.3:o:totolink:a3002ru_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:*

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