Vodafone H500s WiFi Password Disclosure via activation.json
Published Nov 14, 2025
8.7
HIGHCVSS 4.0
EPSS 0.46%
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
-
- Version 0StatusaffectedConstraints<=3.5.10
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Vodacom | Vodafone H500s | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Nov 18, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2025-2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.46% (0.00460) | 37.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.40% (0.00402) | 31.76th | v5 (v2026.06.15) |
| Nov 15, 2025 | 0.10% (0.00098) | 27.80th | v4 (v2025.03.14) |
References (4)
- https://cxsecurity.com/issue/WLB-2022010024 exploit
- https://help.vodacom.co.za/personal/home/61/9493/1023659/Vodafone-H500s-WiFi-router product
- https://www.exploit-db.com/exploits/50636 exploit
- https://www.vulncheck.com/advisories/vodafone-h500s-wifi-password-disclosure-via-activation-json third-party-advisory
Change history (0)
No recorded changes yet.