TOTOLINK A3100R V5.9c.1527 is vulnerable to Buffer Overflow viathe comment parameter in setIpPortFilterRules.

published 2025-05-08 last yr. modified 2026-06-17 4mo ago also EUVD-2025-14039

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

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CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: last yr. (2025-05-12)

Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/tree/main/ToTolink/A3100R-1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-787 Out-of-bounds Write

References

github.com /SunnyYANGyaya/cuicuishark-sheep-fishIOT/tree/main/ToTolink/A3100R-1
exploit

Sources

CVE List CVE-2025-45787
NVD CVE-2025-45787

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