Cisco Expressway vulnerabilities

14 CVEs affecting Cisco Expressway, 1 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2024-20255, published 2024-02-07.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2023-44487: HTTP/2 Rapid Reset Attack Vulnerability, published 2023-10-10. High severity, CVSS 7.5. Actively exploited: in CISA KEV since 2023-10-10. EPSS: 100% chance of exploitation in the next 30 days. The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
CVE-2018-5390, published 2018-08-06. High severity, CVSS 7.5. EPSS: 71.1% chance of exploitation in the next 30 days. Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service.
CVE-2017-3790, published 2017-02-01. High severity, CVSS 8.6. EPSS: 3.5% chance of exploitation in the next 30 days. A vulnerability in the received packet parser of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) software could allow an unauthenticated, remote attacker to cause a…
CVE-2021-34716, published 2021-08-18. High severity, CVSS 7.2. EPSS: 2.4% chance of exploitation in the next 30 days. A vulnerability in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to execute…
CVE-2016-9207, published 2016-12-14. Medium severity, CVSS 6.5. EPSS: 2% chance of exploitation in the next 30 days. A vulnerability in the HTTP traffic server component of Cisco Expressway could allow an unauthenticated, remote attacker to initiate TCP connections to arbitrary hosts. This does not allow for full…
CVE-2022-20812, published 2022-07-06. Medium severity, CVSS 6.5. EPSS: 1.9% chance of exploitation in the next 30 days. Multiple vulnerabilities in the API and in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow a remote attacker to…
CVE-2017-12287, published 2017-10-19. Medium severity, CVSS 4.3. EPSS: 1.6% chance of exploitation in the next 30 days. A vulnerability in the cluster database (CDB) management component of Cisco Expressway Series Software and Cisco TelePresence Video Communication Server (VCS) Software could allow an authenticated,…
CVE-2020-3482, published 2020-11-18. Medium severity, CVSS 6.5. EPSS: 1.4% chance of exploitation in the next 30 days. A vulnerability in the Traversal Using Relays around NAT (TURN) server component of Cisco Expressway software could allow an unauthenticated, remote attacker to bypass security controls and send…
CVE-2020-3596, published 2020-10-08. High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days. A vulnerability in the Session Initiation Protocol (SIP) of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an unauthenticated, remote attacker to cause a…
CVE-2022-20813, published 2022-07-06. Medium severity, CVSS 5.9. EPSS: 1.1% chance of exploitation in the next 30 days. Multiple vulnerabilities in the API and in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow a remote attacker to…

Latest

CVE-2024-20255, published 2024-02-07. High severity, CVSS 7.1. EPSS: 0.6% chance of exploitation in the next 30 days. A vulnerability in the SOAP API of Cisco Expressway Series and Cisco TelePresence Video Communication Server could allow an unauthenticated, remote attacker to conduct a cross-site request forgery…
CVE-2024-20254, published 2024-02-07. High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days. Multiple vulnerabilities in Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an unauthenticated, remote attacker to conduct cross-site request forgery…
CVE-2024-20252, published 2024-02-07. High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days. Multiple vulnerabilities in Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an unauthenticated, remote attacker to conduct cross-site request forgery…
CVE-2021-34715, published 2021-08-18. High severity, CVSS 7.2. EPSS: 1.1% chance of exploitation in the next 30 days. A vulnerability in the image verification function of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to execute code…