Expressway vulnerabilitiesAnd the versions its exploited flaws hit.
Expressway is made by Cisco. We track 14 published vulnerabilities listed under that exact name, across 44 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 10 October 2023. Cisco lists newer releases under their own names, such as Expressway Software, so check those pages too.
The most recent Expressway flaw added to the known-exploited list is CVE-2023-44487, on 10 October 2023. We keep watching the known-exploited list.
Is Expressway listed under other names? Yes.
Cisco also lists Expressway under more specific names, such as Expressway Software and Expressway Series. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.
Which versions of Expressway do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before x14.3.3" means every version up to, but not including, x14.3.3. Find your version, then patch.
- CVE-2023-44487Exploited list, 10 Oct 2023
HTTP/2 Rapid Reset Attack Vulnerability
before x14.3.3
Which Expressway vulnerabilities are being exploited?
1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 7.5HTTP/2 Rapid Reset Attack Vulnerability
HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).
Which Expressway flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- >99%
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.
- 71%CVE-2018-5390High
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.
- 3.5%CVE-2017-3790High
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 reload of the...
- 2.4%CVE-2021-34716High
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 arbitrary code on the...
- 2.0%CVE-2016-9207Medium
A vulnerability in the HTTP traffic server component of Cisco Expressway could allow an unauthenticated, remote attacker to initiate TCP connections to arbitrary hosts.
- 1.9%CVE-2022-20812Medium
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 overwrite arbitrary...
- 1.6%CVE-2017-12287Medium
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, remote attacker to...
- 1.4%CVE-2020-3482Medium
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 network traffic to...
- 1.2%CVE-2020-3596High
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 denial of service...
- 1.1%CVE-2022-20813Medium
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 overwrite arbitrary...
Running Expressway? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
HTTP/2 contains a rapid reset vulnerability that allows for a distributed denial-of-service attack (DDoS).
- Matched to
- Expressway on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 14 published vulnerabilities listed under the name Expressway, across 44 versions. The most recent Expressway flaw added to the known-exploited list is CVE-2023-44487, on 10 October 2023.
1 is on the list of flaws known to be exploited. The most recently added is CVE-2023-44487.
Cisco also lists Expressway under more specific names, such as Expressway Software and Expressway Series. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.
Each flaw names its own versions, usually as ranges. The newest, CVE-2023-44487, affects before x14.3.3. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Expressway. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.