Cyber Resilience

CVE-2025-28027

HighPublic PoC

Published: 22 April 2025

Published
22 April 2025
Modified
07 May 2025
KEV Added
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Patch
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CVSS Score v3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0014 34.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-28027 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Totolink A830R Firmware. Its CVSS base score is 7.3 (High).

Operationally, ranked at the 34.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

TOTOLINK A830R V4.1.2cu.5182_B20201102, A950RG V4.1.2cu.5161_B20200903, A3000RU V5.9c.5185_B20201128, and A3100R V4.1.2cu.5247_B20211129 was found to contain a buffer overflow vulnerability in downloadFile.cgi.

CWE(s)
CWE-121

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

totolink
a830r firmware
4.1.2cu.5182_b20201102
totolink
a950rg firmware
4.1.2cu.5161_b20200903
totolink
a3000ru firmware
5.9c.5185_b20201128
totolink
a3100r firmware
4.1.2cu.5247_b20211129

Mitigating Controls

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

References