Security readout for executives and security teams
Plain-English summary
Older Zoom desktop clients could accept forged UDP messages as if they came from a meeting participant or Zoom server. That could let an unauthenticated remote attacker disrupt meetings, impersonate users in messages, or take over shared-screen control behavior.
Executive priority
Prioritize cleanup if legacy Zoom clients remain in the environment, especially for executive, legal, incident-response, or customer-facing meetings. If the fleet is current, this is mainly a historical hygiene issue.
Technical view
CVE-2018-15715 is an authentication weakness in Zoom clients for Windows, macOS, and Linux. Affected clients process spoofed UDP messages without sufficient source validation, enabling unauthorized functionality invocation such as attendee removal, user-message spoofing, or shared-screen hijacking.
Likely exposure
Exposure is limited to legacy Zoom clients: Windows before 4.1.34814.1119, macOS before 4.1.34801.1116, and Linux 2.4.129780.0915 or below. Modern managed fleets are likely unaffected if Zoom updates are enforced.
Exploitation context
The provided sources describe remote unauthenticated UDP message spoofing. They do not show CISA KEV listing, public active exploitation, or confirmed widespread abuse. Treat exploitation status as unconfirmed from this bundle.
Researcher notes
The record maps to CWE-290 and describes unauthenticated spoofed UDP processing. The bundle lacks CVSS scoring, vendor advisory text, and active exploitation evidence, so validation should focus on version exposure rather than exploit reproduction.
Mitigation direction
- Upgrade Zoom Windows clients to 4.1.34814.1119 or later.
- Upgrade Zoom macOS clients to 4.1.34801.1116 or later.
- Upgrade Linux clients beyond 2.4.129780.0915.
- Remove unsupported legacy Zoom clients from managed endpoints.
- Check current Zoom vendor guidance for any newer remediation requirements.
Validation and detection
- Inventory installed Zoom client versions across Windows, macOS, and Linux endpoints.
- Compare discovered versions against the affected version thresholds.
- Confirm endpoint management blocks or updates obsolete Zoom builds.
- Review meeting disruption reports for attendee removal or spoofed messages.
- Document any remaining legacy clients and compensating controls.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-290: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2018-15715 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.tenable.com/security/research/tra-2018-40CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authentication Bypass by Spoofing
Authentication Bypass by Spoofing represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.