#VU25646 Inadequate Encryption Strength in Cisco Systems, Inc products - CVE-2019-15126

Vulnerability identifier: #VU25646

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear

CVE-ID: CVE-2019-15126

CWE-ID: CWE-326

Exploitation vector: Adjecent network

Exploit availability: Public exploit is available

Vulnerable software:
Cisco Connected Grid Routers
Cisco RV340W Dual WAN Gigabit Wireless-AC VPN Router
Cisco WAP125 Wireless-AC Dual Band Desktop Access Point with PoE
Cisco WAP150 Wireless-AC/N Dual Radio Access Point with PoE
Cisco WAP361 Wireless-AC/N Dual Radio Wall Plate Access Point with PoE
Cisco WAP571 Wireless-AC/N Premium Dual Radio Access Point with PoE
Cisco WAP571E Wireless-AC/N Premium Dual Radio Outdoor Access Point
Cisco WAP581 Wireless-AC Dual Radio Wave 2 Access Point
Cisco Catalyst 9115 Series Wi-Fi 6 Access Points
Cisco Catalyst 9120 Series Access Points
RV110W Wireless-N VPN Firewall
RV215W Wireless-N VPN Router
Cisco Small Business RV130 Series VPN Routers
Cisco Wireless IP Phone 8821

Software vendor:
Cisco Systems, Inc

The vulnerability allows a remote attacker to decrypt Wi-Fi frames.

The vulnerability exists because after an affected device handles a disassociation event it can send a limited number of Wi-Fi frames encrypted with a static, weak Pairwise Temporal Key (PTK). A remote attacker on the local network can acquire these frames and decrypt them with the static PTK without the knowledge of the security session establishment used to secure the Wi-Fi network.

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-wi-fi-info-disclosure