CVE-2025-55177
Act now ● On CISA KEV — actively exploited
Actively exploited — on the CISA KEV list.
CVSS base
—
EPSS — probability of exploitation (30 days)
4.3%
90.7th percentile
CISA KEV
Listed
Added 2025-09-02 · patch by 2025-09-23
Weakness / dates
—
Published — · modified —
Timeline
- 2025-09-02 — Added to CISA KEV (actively exploited)
- 2025-09-23 — CISA patch-by deadline
Description
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.