Vulnerability · Published Aug 24, 2026 · Assigned by CERT-PL

CVE-2025-63080Authenticated RCE in KAON PG5298

High 8.5

In plain English

A high-severity incorrect authorization in PG5298A from KAON. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 4.0)8.5High

Exploit odds (30 days)0.3%top 78.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
KAON	PG5298A	0 – before 3.0.82
KAON	PG5298B	0 – before 4.0.82

Weakness: CWE-863 · 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

References

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