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Public proof of conceptFix available

CVE-2018-15442

A public proof of concept exists; no exploitation attested.

  • Published2018-10-24
  • Fixed in33.6.4
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability in the update service of Cisco Webex Meetings Desktop App for Windows could allow an authenticated, local attacker to execute arbitrary commands as a privileged user. The vulnerability is due to insufficient validation of user-supplied parameters. An attacker could exploit this vulnerability by invoking the update service command with a crafted argument. An exploit could allow the attacker to run arbitrary commands with SYSTEM user privileges. While the CVSS Attack Vector metric denotes the requirement for an attacker to have local access, administrators should be aware that in Active Directory deployments, the vulnerability could be exploited remotely by leveraging the operating system remote management tools.

Timeline

dates in UTC
  1. 2018-10-25Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-15442?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-15442?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Cisco webex meetings desktop
BranchAffectedFixed in
33.6< 33.6.433.6.4
Cisco webex productivity tools
BranchAffectedFixed in
33.0≥ 32.6.0, < 33.0.633.0.6

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As cisco, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Cisco WebEx Event Center
    Affected
    • = 33.5.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2018-10-27

Fix

  1. Update Cisco webex meetings desktop to 33.6.4

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-45695EDB-45696
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
3 modulesexploit/windows/local/webexecrank: goodauxiliary/admin/smb/webexec_commandrank: normalexploit/windows/smb/webexecrank: manualModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2018-10-24
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-766m-hqm4-2gcf

Frequently asked questions

What is CVE-2018-15442?

A vulnerability in the update service of Cisco Webex Meetings Desktop App for Windows could allow an authenticated, local attacker to execute arbitrary commands as a privileged user. The vulnerability is due to insufficient validation of user-supplied parameters. An attacker could exploit this vulnerability by invoking the update service command with a crafted argument. An exploit could allow the attacker to run arbitrary commands with SYSTEM user privileges. While the CVSS Attack Vector metric denotes the requirement for an attacker to have local access, administrators should be aware that in Active Directory deployments, the vulnerability could be exploited remotely by leveraging the operating system remote management tools.

Is CVE-2018-15442 actively exploited?

Active exploitation of CVE-2018-15442 has not been confirmed. Its EPSS score was 16.0% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-15442?

CVE-2018-15442 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record