Cyber Resilience

CVE-2025-63154

HighPublic PoC

Published: 10 November 2025

Published
10 November 2025
Modified
17 November 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0029 53.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-63154 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Totolink A7000R Firmware. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked in the top 46.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-121

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
Why these techniques?

Stack overflow in urldecode function enables DoS via crafted POST request, exploiting the router application to crash it, facilitating Endpoint Denial of Service through application exploitation.

Affected Assets

totolink
a7000r firmware
9.1.0u.6115_b20201022

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References