CVE-2020-3194

Arbitrary code execution via malformed recording files

Published Apr 15, 2020 · Updated Nov 15, 2024

Memory corruption in Cisco Webex recording players for Windows allows attackers to execute code through a malicious ARF or WRF file. The players insufficiently validate recording elements before processing them, enabling out-of-bounds memory operations; Cisco has not disclosed a narrower code locus. Exploitation requires the targeted user to open the crafted recording, and resulting code runs with that user's privileges.

CVSS severity7.8
High
EPSS probability1.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in Cisco Webex recording players for Windows allows attackers to execute code through a malicious ARF or WRF file. The players insufficiently validate recording elements before processing them, enabling out-of-bounds memory operations; Cisco has not disclosed a narrower code locus. Exploitation requires the targeted user to open the crafted recording, and resulting code runs with that user's privileges.

The record

CVE
CVE-2020-3194
Published
Apr 15, 2020
Updated
Nov 15, 2024
Vendor
Cisco
Product
Cisco Webex Meetings
Classifications
CWE-20, CWE-119, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Cisco · Cisco Webex Meetingsversion=n/a

Published CVSS scores

7.8Cisco Systems, Inc.CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1203Exploitation for Client Execution
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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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