How severe is CVE-2025-63463?

CVE-2025-63463 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-63463 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63463?

CVE-2025-63463 affects Totolink Lr350 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63463?

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-2025-63463 have an EU (EUVD) identifier?

Yes. CVE-2025-63463 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37380.

When was CVE-2025-63463 published?

CVE-2025-63463 was published on 2025-10-31 and last updated on 2026-06-17.

CVE-2025-63463

CVE-2025-63463 is a high-severity vulnerability in Totolink Lr350 Firmware with a CVSS 3.x base score of 7.5. 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-121.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37380
Weakness: CWE-121
Affected product: Totolink Lr350 Firmware
Published: 2025-10-31
Last modified: 2026-06-17

Description

Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the wifiOff parameter in the sub_4232EC function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.

Frequently asked questions

What is CVE-2025-63463?: Totolink LR350 v9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the wifiOff parameter in the sub_4232EC function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted request.
How severe is CVE-2025-63463?: CVE-2025-63463 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-63463 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63463?: CVE-2025-63463 affects Totolink Lr350 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63463?: 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-2025-63463 have an EU (EUVD) identifier?: Yes. CVE-2025-63463 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37380.
When was CVE-2025-63463 published?: CVE-2025-63463 was published on 2025-10-31 and last updated on 2026-06-17.

References

https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/LR350/4/1.md

Affected products (1)

cpe:2.3:o:totolink:lr350_firmware:9.3.5u.6369_b20220309:*:*:*:*:*:*:*

More vulnerabilities in Totolink Lr350 Firmware

CVE-2024-42967 — Critical (CVSS 9.8): Incorrect access control in TOTOLINK LR350 V9.3.5u.6369_B20220309 allows attackers to obtain the apmib configuration…
CVE-2024-36783 — Critical (CVSS 9.8): TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection via the host_time parameter in the…
CVE-2024-35387 — Critical (CVSS 9.8): TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a stack overflow via the http_host parameter in the…
CVE-2024-35099 — Critical (CVSS 9.8): TOTOLINK LR350 V9.3.5u.6698_B20230810 was discovered to contain a stack overflow via the password parameter in the…
CVE-2023-37149 — Critical (CVSS 9.8): TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection vulnerability via the FileName…
CVE-2023-37148 — Critical (CVSS 9.8): TOTOLINK LR350 V9.3.5u.6369_B20220309 was discovered to contain a command injection vulnerability via the ussd…

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