CVE-2019-18822Public exploit

Local privilege escalation via replaceable service binary

Published Apr 14, 2020 · Updated Aug 5, 2024

Improper privilege management in ZOOM Call Recording 6.3.1 allows local users to gain root via a replaceable service binary. The [email protected] launches /opt/callrec/bin/rs with root privileges even though the executable is owned by the callrec account, allowing that account to substitute a Trojan horse. Exploitation requires access as the service account or another local user able to replace the binary; successful replacement executes attacker code as root.

CVSS severity8.8
High
EPSS probability1.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in ZOOM Call Recording 6.3.1 allows local users to gain root via a replaceable service binary. The [email protected] launches /opt/callrec/bin/rs with root privileges even though the executable is owned by the callrec account, allowing that account to substitute a Trojan horse. Exploitation requires access as the service account or another local user able to replace the binary; successful replacement executes attacker code as root.

The record

CVE
CVE-2019-18822
Published
Apr 14, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-269, T1574.011
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0NVDAV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1574.011Services File Permissions Weakness

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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