CVE-2022-4985

Vodafone H500s WiFi Password Disclosure via activation.json

Published Nov 14, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Vodafone H500s devices running firmware v3.5.10 (hardware model Sercomm VFH500) expose the WiFi access point password via an unauthenticated HTTP endpoint. By sending a crafted GET request to /data/activation.json with specific headers and cookies, a remote attacker can retrieve a JSON document that contains the wifi_password field. This allows an unauthenticated attacker to obtain the WiFi credentials and gain unauthorized access to the wireless network, compromising confidentiality of network traffic and attached systems.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Vodafone vodafone H500s
CPEs cpe:2.3:a:vodafone:vodafone_h500s:*:*:*:*:*:*:*:*
Vendors & Products Vodafone vodafone H500s
Type Values Removed Values Added
First Time appeared Sercomm
Sercomm h500s
Vodafone
Vodafone h500s
Vendors & Products Sercomm
Sercomm h500s
Vodafone
Vodafone h500s
Type Values Removed Values Added
Description Vodafone H500s devices running firmware v3.5.10 (hardware model Sercomm VFH500) expose the WiFi access point password via an unauthenticated HTTP endpoint. By sending a crafted GET request to /data/activation.json with specific headers and cookies, a remote attacker can retrieve a JSON document that contains the wifi_password field. This allows an unauthenticated attacker to obtain the WiFi credentials and gain unauthorized access to the wireless network, compromising confidentiality of network traffic and attached systems.
Title Vodafone H500s WiFi Password Disclosure via activation.json
Weaknesses CWE-497
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Apr 7, 2026, 2:06 PM
Reserved
Nov 14, 2025, 9:18 PM
Status
Deferred
Published
Nov 14, 2025, 11:15 PM
Modified
Nov 10, 2026, 12:10 PM