⚠ Actively exploited
Added to CISA KEV on 2025-09-02. Federal agencies required to patch by 2025-09-23. Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable..
CVE-2025-55177 — Incorrect Authorization in Whatsapp Business FOR IOS
Severity
5.4MEDIUMNVD
CNA10.0VulnCheck10.0
EPSS
0.8%
top 25.71%
CISA KEV
KEV
Added 2025-09-02
Due 2025-09-23
Exploit
No known exploits
Affected products
Timeline
PublishedAug 29
KEV addedSep 2
KEV dueSep 23
Latest updateNov 7
CISA Required Action: 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
Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to v2.25.21.73, WhatsApp Business for iOS v2.25.21.78, and WhatsApp for Mac v2.25.21.78 could have allowed an unrelated user to trigger processing of content from an arbitrary URL on a target’s device. We assess that this vulnerability, in combination with an OS-level vulnerability on Apple platforms (CVE-2025-43300), may have been exploited in a sophisticated attack against specific targeted users.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitability: 2.8 | Impact: 2.5