Description
On Verizon 5G Home LVSKIHP InDoorUnit (IDU) 3.4.66.162 and OutDoorUnit (ODU) 3.33.101.0 devices, the CRTC and ODU RPC endpoints provide a means of provisioning a firmware update for the device via crtc_fw_upgrade or crtcfwimage. The URL provided is not validated, and thus allows for arbitrary file upload to the device. This occurs in /lib/lua/luci/crtc.lua (IDU) and /lib/functions/wnc_jsonsh/wnc_crtc_fw.sh (ODU).
References (2)
Core 2
Core References
Vendor Advisory x_refsource_misc
https://www.verizon.com/info/reportsecurityvulnerability/
Exploit, Third Party Advisory x_refsource_misc
https://github.com/JousterL/SecWriteups/blob/main/Verizon%20LVSKIHP%205G%20Modem/readme.md
Scores
CVSS v3
7.5
EPSS
0.0025
EPSS Percentile
48.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-434
Status
published
Products (2)
verizon/lvskihp_indoorunit_firmware
3.4.66.162
verizon/lvskihp_outdoorunit_firmware
3.33.101.0
Published
Jul 14, 2022
Tracked Since
Feb 18, 2026