CVE-2025-63080: Authenticated RCE in KAON PG5298

Severity: high (CVSS 8.5 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-24 · updated 2026-10-07
Weakness: CWE-863

Description

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.

Affected products

KAON PG5298A: before 3.0.82 — fixed in 3.0.82
KAON PG5298B: before 4.0.82 — fixed in 4.0.82

How to fix

Upgrade to a fixed version: KAON PG5298A 3.0.82; KAON PG5298B 4.0.82. Check the vendor advisory for mitigations.

References

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

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