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CVE-2020-1903

MEDIUM
5.5
CVSS Score
Published: October 6, 2020 at 05:35 PM UTC
Updated: June 17, 2026 at 03:02 AM UTC
2 products affected across 1 vendorWhatsAppWhatsapp Business

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.7%

Description

An issue when unzipping docx, pptx, and xlsx documents in WhatsApp for iOS prior to v2.20.61 and WhatsApp Business for iOS prior to v2.20.61 could have resulted in an out-of-memory denial of service. This issue would have required the receiver to explicitly open the attachment if it was received from a number not in the receiver's WhatsApp contacts.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

WhatsApp· Whatsapp
95%
v < 2.20.612.20.61
Affected range stops below 2.20.61, so it looks safe — our inference, not a vendor statement
Whatsapp Business· Whatsapp
95%
v < 2.20.612.20.61
Affected range stops below 2.20.61, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.whatsapp.com/security/advisories/2020/

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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