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CVE-2020-3347

16
FAUCET Score

CVE-2020-3347 is a medium-severity information disclosure vulnerability affecting the Cisco Webex Meetings Desktop App for Windows. It stems from unsafe shared memory usage, allowing an authenticated, local attacker to access sensitive data like usernames, meeting details, or authentication tokens. While there is no known active exploitation or public exploit code, the vulnerability has garnered significant community discussion and media coverage, indicating awareness despite its low EPSS score.

Impacted Technologies

VendorProductVersion(s)CPE
< 40.4.12CPE matchmatch criteria
cpe:2.3:a:cisco:webex_meetings:*:*:*:*:desktop:windows:*:*
40.6.0CPE matchmatch criteria
cpe:2.3:a:cisco:webex_meetings:40.6.0:-:*:*:desktop:windows:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 84th percentile among its peer group of 15,940 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-client-NBmqM9vt
Vendor Advisory