What’s Vulnerable › Vulnerabilities

CVE-2022-4985: Vodafone H500s WiFi Password Disclosure via activation.json

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-14 · updated 2026-06-17
• Weakness: CWE-497

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.

Affected products

• Vodacom Vodafone H500s: through 3.5.10

References

• https://cxsecurity.com/issue/WLB-2022010024
• https://help.vodacom.co.za/personal/home/61/9493/1023659/Vodafone-H500s-WiFi-router
• https://www.exploit-db.com/exploits/50636
• https://www.vulncheck.com/advisories/vodafone-h500s-wifi-password-disclosure-via-activation-json
• https://cxsecurity.com/issue/WLB-2022010024
• https://www.exploit-db.com/exploits/50636

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