CVE-2019-18822: A privilege escalation vulnerability in ZOOM Call Recording 6.3.1 allows its user account (i.e., the account u

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HIGH 8.8DOWNGRADE

CVE-2019-18822 is a high-severity flaw (CVSS 8.8) affecting call recording. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A privilege escalation vulnerability in ZOOM Call Recording 6.3.1 allows its user account (i.e., the account under which the program runs - by default, the callrec account) to elevate privileges to root by abusing the callrec-rs@.service. The callrec-rs@.service starts the /opt/callrec/bin/rs binary with root privileges, and this binary is owned by callrec. It can be replaced by a Trojan horse.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-269
Published	2020-04-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: eleveo

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

Am I affected?

Timeline

2020-04-14 18:15 UTCPublished CVE record published
2026-06-17 02:25 UTCUpdated Record last modified

eleveo call recording DOWNGRADE

Affected: 6.3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.3.1

1. Check installed version

apt-cache policy call-recording || rpm -q call-recording || call-recording --version

2. No fixed release: DOWNGRADE to a release before 6.3.1 (Debian / Ubuntu)

apt-cache madison call-recording sudo apt install call-recording=<VERSION_BEFORE_6.3.1> sudo apt-mark hold call-recording

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list call-recording sudo dnf downgrade call-recording-<VERSION_BEFORE_6.3.1> sudo dnf versionlock add call-recording

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-2019-18822?

call recording: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-18822 being exploited?

CVE-2019-18822 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-2019-18822 affect?

CVE-2019-18822 affects call recording. Severity is high (CVSS 8.8). A privilege escalation vulnerability in ZOOM Call Recording 6.3.1 allows its user account (i.e., the account under which the program runs - by default, the callrec account) to elevate privileges to root by abusing the callrec-rs@.service. T

How urgent is CVE-2019-18822?

Priority 54/100. High severity; Public exploit reference

Software pages

Zoom vulnerabilities

Related CVEs

CVE-2019-18223 MEDIUM 5.4 DOWNGRADE ZOOM International Call Recording 6.3.1 suffers from multiple authenticated stored XSS vulnerabilities via the

References

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