ACTIVELY EXPLOITED
CVE-2025-55177: Meta Platforms WhatsApp Incorrect Authorization Vulnerability
| Vendor | Meta Platforms |
|---|---|
| Product | |
| Actively exploited | Yes |
| Added to CISA KEV | 2 Sep 2025 |
| CISA federal deadline | 23 Sep 2025 |
| Weakness (CWE) | CWE-863 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
Meta Platforms WhatsApp contains an incorrect authorization vulnerability due to an incomplete authorization of linked device synchronization messages. This vulnerability could allow an unrelated user to trigger processing of content from an arbitrary URL on a target’s device.
SOURCES
Other Meta Platforms flaws
- CVE-2025-55182: Meta React Server Components Remote Code Execution Vulnerability
- CVE-2019-18426: WhatsApp Cross-Site Scripting Vulnerability
- CVE-2019-3568: WhatsApp VOIP Stack Buffer Overflow Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.