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CVE-2022-20814: A vulnerability in the certificate validation of Cisco Expressway-C and Cisco TelePresence VCS could

46
This month
HIGH 7.4REMOTEDOWNGRADE

CVE-2022-20814 is a high-severity flaw (CVSS 7.4) affecting telepresence video communication server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability in the certificate validation of Cisco Expressway-C and Cisco TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data.  The vulnerability is due to a lack of validation of the SSL server certificate that an affected device receives when it establishes a connection to a Cisco Unified Communications Manager device. An attacker could exploit this vulnerab

Why this priority

  • High severity
  • Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score7.4 (High)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance0.9% (top 40%)
CISA exploited listNo
WeaknessCWE-295
Published2024-11-15
Last modified2026-06-17
Publisher (CNA): Cisco Systems, Inc. · Vendor: cisco

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

cisco telepresence video communication server DOWNGRADE
Affected: x8.1 · x8.1.1 · x8.1.2 · x8.2 · x8.2.1 · x8.2.2 · x8.5 · x8.5.1
Fixed in: no fixed release known
Safe to downgrade to: a release before x8.1
1. Check installed version
apt-cache policy telepresence-video-communication-server || rpm -q telepresence-video-communication-server || telepresence-video-communication-server --version
2. No fixed release: DOWNGRADE to a release before x8.1 (Debian / Ubuntu)
apt-cache madison telepresence-video-communication-server sudo apt install telepresence-video-communication-server=<VERSION_BEFORE_x8.1> sudo apt-mark hold telepresence-video-communication-server
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list telepresence-video-communication-server sudo dnf downgrade telepresence-video-communication-server-<VERSION_BEFORE_x8.1> sudo dnf versionlock add telepresence-video-communication-server
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-20814?

telepresence video communication server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-20814 being exploited?

CVE-2022-20814 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-20814 affect?

CVE-2022-20814 affects telepresence video communication server. Severity is high (CVSS 7.4). A vulnerability in the certificate validation of Cisco&nbsp;Expressway-C and Cisco&nbsp;TelePresence VCS could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data.&nbsp;&nbsp;The vulnerability is due to a

How urgent is CVE-2022-20814?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

Software pages

Cisco vulnerabilities

Related CVEs

References

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