CVE-2025-20365
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
A vulnerability in the IPv6 Router Advertisement (RA) packet processing of Cisco Access Point Software could allow an unauthenticated, adjacent attacker to modify the IPv6 gateway on an affected device. The vulnerability is due to a logic error when processing IPv6 RA packets from wireless clients. A successful exploit could temporarily change the IPv6 gateway and cause intermittent packet loss for associated wireless clients.
Risk Assessment
An attacker within wireless range could redirect IPv6 traffic or disrupt connectivity, causing packet loss and potential data interception.
Recommendation
Update Cisco Access Point Software to the latest version containing the fix.
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Original NVD description (English source)
A vulnerability in the IPv6 Router Advertisement (RA) packet processing of Cisco Access Point Software could allow an unauthenticated, adjacent attacker to modify the IPv6 gateway on an affected device. This vulnerability is due to a logic error in the processing of IPv6 RA packets that are received from wireless clients. An attacker could exploit this vulnerability by associating to a wireless network and sending a series of crafted IPv6 RA packets. A successful exploit could allow the attacker to temporarily change the IPv6 gateway of an affected device. This could also lead to intermittent packet loss for any wireless clients that are associated with the affected device.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS