CVE-2025-55177

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.047 · 92 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 1 exploit · PoC

Likely / severe?

4.73% (92nd) EPSS

CVSS 5.4 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2025-09-02remediate 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.

EPSS · scored 2026-10-24

Meta Platforms WhatsApp Incorrect Authorization Vulnerability

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

Technical severity, 0–10. One row per scoring source.

5.4

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.4mediumAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:Csecondary · ENISA EU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · cve-assign@fb.comexploitability 2.8 · impact 2.5

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-863USprimaryCWE-863US

exploits (1)

Public proof-of-concept and weaponised exploit code.

danielw98/zero-click-exploit-analysisCVE-2025-55177 + CVE-2025-43300: reverse-engineering the WhatsApp-ImageIO zero-click iOS chain, with interactive labs.PoC · poc_in_github

affected products (9)

Products and version ranges known to be affected.

Facebook WhatsApp Business for iOS2.22.25.2 → 2.25.21.78enisa_euvdEU
Facebook WhatsApp Desktop for Mac2.22.25.2 → 2.25.21.78enisa_euvdEU
Facebook WhatsApp for iOS2.22.25.2 → 2.25.21.73enisa_euvdEU
Meta Platforms Inc WhatsApp Business for iOS2.22.25.2 → 2.25.21.78fstec_bduRU
Meta Platforms Inc WhatsApp Desktop2.22.25.2 → 2.25.21.78fstec_bduRU
Meta Platforms Inc WhatsApp for iOS2.22.25.2 → 2.25.21.73fstec_bduRU
whatsapp whatsapp2.22.25.2 → 2.25.21.73nvdUScpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:*:*:*
whatsapp whatsapp2.22.25.2 → 2.25.21.78nvdUScpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:*:*:*
whatsapp whatsapp business2.22.25.2 → 2.25.21.78nvdUScpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2025-08-29modified 2026-10-18

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+4983 more

references (9)

External citations — patches, advisories, analysis.

scry

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