CVE-2025-63080 PUBLISHED

Authenticated RCE in KAON PG5298

Assigner: CERT-PL
Reserved: 24.10.2025 Published: 24.08.2026 Updated: 24.08.2026

Firmware in KAON PG5298A and PG5298B routers allow an authenticated user to send crafted JSON-RPC requests and perform operations not possible via GUI, e.g. system file read or command execution. This vulnerability has been fixed in firmware version: 3.0.82 for PG5298A and 4.0.82 for PG5298B.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.5

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	KAON
Product	PG5298A
Versions	Default: unaffected affected from 0 to 3.0.82 (excl.)

Vendor	KAON
Product	PG5298B
Versions	Default: unaffected affected from 0 to 4.0.82 (excl.)

Credits

Oskar Rudziński finder

References

https://cert.pl/en/posts/2026/08/CVE-2025-63080/

Problem Types

CWE-863 Incorrect Authorization CWE