How severe is CVE-2025-63154?

CVE-2025-63154 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-2025-63154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63154?

CVE-2025-63154 affects Totolink A7000r Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63154?

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-2025-63154 have an EU (EUVD) identifier?

Yes. CVE-2025-63154 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-48951.

When was CVE-2025-63154 published?

CVE-2025-63154 was published on 2025-11-10 and last updated on 2026-06-17.

CVE-2025-63154

CVE-2025-63154 is a high-severity vulnerability in Totolink A7000r 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% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-48951
Weakness: CWE-121
Affected product: Totolink A7000r Firmware
Published: 2025-11-10
Last modified: 2026-06-17

Description

TOTOLink A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow in the addEffect parameter of the urldecode function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

Frequently asked questions

What is CVE-2025-63154?: TOTOLink A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack overflow in the addEffect parameter of the urldecode function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.
How severe is CVE-2025-63154?: CVE-2025-63154 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-2025-63154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63154?: CVE-2025-63154 affects Totolink A7000r Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63154?: 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-2025-63154 have an EU (EUVD) identifier?: Yes. CVE-2025-63154 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-48951.
When was CVE-2025-63154 published?: CVE-2025-63154 was published on 2025-11-10 and last updated on 2026-06-17.

References

https://github.com/0-fool/VulnbyCola/blob/main/TOTOLINK/A7000/4/1.md

Affected products (1)

cpe:2.3:o:totolink:a7000r_firmware:9.1.0u.6115_b20201022:*:*:*:*:*:*:*

More vulnerabilities in Totolink A7000r Firmware

CVE-2025-51452 — Critical (CVSS 9.8): In TOTOLINK A7000R firmware 9.1.0u.6115_B20201022, an attacker can bypass login by sending a specific request through…
CVE-2024-28639 — Critical (CVSS 9.8): Buffer Overflow vulnerability in TOTOLink X5000R V9.1.0u.6118-B20201102 and A7000R V9.1.0u.6115-B20201022, allow remote…
CVE-2023-49418 — Critical (CVSS 9.8): TOTOLink A7000R V9.1.0u.6115_B20201022has a stack overflow vulnerability via setIpPortFilterRules.
CVE-2023-49417 — Critical (CVSS 9.8): TOTOLink A7000R V9.1.0u.6115_B20201022 has a stack overflow vulnerability via setOpModeCfg.
CVE-2023-45984 — Critical (CVSS 9.8): TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack…
CVE-2023-36950 — Critical (CVSS 9.8): TOTOLINK X5000R V9.1.0u.6118_B20201102 and TOTOLINK A7000R V9.1.0u.6115_B20201022 was discovered to contain a stack…

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