How severe is CVE-2025-14964?

CVE-2025-14964 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-14964 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-14964?

CVE-2025-14964 affects Totolink T10 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-14964?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-14964 have an EU (EUVD) identifier?

Yes. CVE-2025-14964 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204612.

When was CVE-2025-14964 published?

CVE-2025-14964 was published on 2025-12-19 and last updated on 2026-06-17.

CVE-2025-14964

CVE-2025-14964 is a critical-severity vulnerability in Totolink T10 Firmware with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
CVSS v4: 9.3
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204612
Weakness: CWE-119
Affected product: Totolink T10 Firmware
Published: 2025-12-19
Last modified: 2026-06-17

Description

A vulnerability has been found in TOTOLINK T10 4.1.8cu.5083_B20200521. This affects the function sprintf of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument loginAuthUrl leads to stack-based buffer overflow. The attack may be performed from remote.

Frequently asked questions

What is CVE-2025-14964?: A vulnerability has been found in TOTOLINK T10 4.1.8cu.5083_B20200521. This affects the function sprintf of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument loginAuthUrl leads to stack-based buffer overflow. The attack may be performed from remote.
How severe is CVE-2025-14964?: CVE-2025-14964 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-14964 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-14964?: CVE-2025-14964 affects Totolink T10 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-14964?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-14964 have an EU (EUVD) identifier?: Yes. CVE-2025-14964 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204612.
When was CVE-2025-14964 published?: CVE-2025-14964 was published on 2025-12-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:totolink:t10_firmware:4.1.8cu.5803_b20200521:*:*:*:*:*:*:*

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