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CVE-2018-15715

31
FAUCET Score

CVE-2018-15715 is a critical vulnerability affecting Zoom clients on Windows, macOS, and Linux, allowing unauthorized processing of UDP messages. A remote, unauthenticated attacker can spoof messages from meeting attendees or Zoom servers to invoke client functionality. This enables actions such as removing attendees, spoofing user messages, or hijacking shared screens, posing a severe risk to meeting integrity and user privacy. With a CVSS score of 9.8 (CRITICAL), the vulnerability is easily exploitable over the network with low complexity and no user interaction, leading to high impacts on confidentiality, integrity, and availability. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has garnered significant community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4.129780.0915CPE matchmatch criteria
cpe:2.3:a:zoom:zoom:*:*:*:*:*:linux:*:*
< 4.1.34801.1116CPE matchmatch criteria
cpe:2.3:a:zoom:zoom:*:*:*:*:*:mac_os_x:*:*
< 4.1.34814.1119CPE matchmatch criteria
cpe:2.3:a:zoom:zoom:*:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.49%
Probability of exploitation in next 30 days
EPSS Percentile
87.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0349 is in the 80th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

dogukanurkervendor investigatingvia llm_extracted
posthogvendor investigatingvia llm_extracted
qlikvendor investigatingvia llm_extracted

Vendor Advisories (3)

dogukanurkerllm-dogukanurker-6605ae884df78222CRITICAL

[R2] Zoom Message Spoofing

Nov 29, 2018
qlikllm-qlik-5b325889ac9cb8e8CRITICAL

[R2] Zoom Message Spoofing

Nov 29, 2018
posthogllm-posthog-bd1056af7d33342eCRITICAL

[R2] Zoom Message Spoofing

Nov 29, 2018

References

tenable.com / security/research/tra-2018-40
ExploitThird Party Advisory