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CVE-2018-15421

Cisco Webex Network Recording Player Remote Code Execution Vulnerabilities

HIGH
7.8
CVSS Score
Published: October 5, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 01:42 AM UTC
5 products affected across 1 vendorWebex Meetings ServerWebex Meetings OnlineWebex Business Suite 32

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Severity
HIGH7.8
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

A vulnerability in the Cisco Webex Network Recording Player for Microsoft Windows and the Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system. The vulnerability exist because the affected software improperly validates Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. An attacker could exploit this vulnerability by sending a user a malicious ARF or WRF file via a link or an email attachment and persuading the user to open the file by using the affected software. A successful exploit could allow the attacker to execute arbitrary code on the affected system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Webex Business Suite 32· Cisco
95%
v < 32.15.10
Affected range stops below 32.15.10, so it looks safe — our inference, not a vendor statement
Webex Business Suite 33· Cisco
95%
v < 33.3
Affected range stops below 33.3, so it looks safe — our inference, not a vendor statement
Webex Meetings Online· Cisco
95%
v < 1.3.37
Affected range stops below 1.3.37, so it looks safe — our inference, not a vendor statement
Webex Meetings Server· Cisco
95%
2.5 maintenance_release2_patch12.5 maintenance_release5_patch12.5 maintenance_release6_patch22.5 maintenance_release6_patch32.5 maintenance_release6_patch42.5.1.292.62.6 maintenance_release1_patch12.6 maintenance_release2_patch12.6 maintenance_release3_patch12.6 maintenance_release3_patch22.72.7 base2.7 maintenance_release1_patch12.7 maintenance_release2_patch12.7.12.82.8 base
Webex Advanced Recording Format Player· Cisco
60%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/105374
VDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1041689
Vendor Advisoryx_refsource_CISCO
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180919-webex

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-787

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