Security readout for executives and security teams
CVE-2018-20655 is an old WhatsApp for iOS calling bug. A malformed packet sent during call handling could cause a stack-based overflow because the app missed a size check. The known affected scope is WhatsApp for iOS and WhatsApp Business for iOS before v2.18.90.24. Exposure is mainly unmanaged or legacy iOS devices running WhatsApp or WhatsApp Business versions earlier than 2.18.90.24. Modern managed fleets should have low exposure if app updates are enforced. Treat this as a targeted mobile exposure cleanup item, not a broad infrastructure emergency. Prioritize executive attention if the organization permits WhatsApp on unmanaged devices, uses WhatsApp Business, or lacks mobile app version enforcement. Mitigation focus: Update WhatsApp for iOS to v2.18.90.24 or later.; Update WhatsApp Business for iOS to v2.18.90.24 or later.; Prefer the latest vendor-supported App Store release..
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
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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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.facebook.com/security/advisories/cve-2018-20655/CVE 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.
Stack-based Buffer Overflow
Stack-based Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.