Auth bypass in Verizon Lvskihp
CVE-2022-28376
Verizon 5G Home LVSKIHP outside devices through 2022-02-15 allow anyone (knowing the device's serial number) to access a CPE admin website, e.g., at the 10.0.0.1 IP address. The password (for the verizon username) is calculated by concatenating the serial number and the model (i.e., the LVSKIHP string), running the sha256sum program, and extracting the first seven characters concatenated with the last seven characters of that SHA-256 value.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.reddit.com/r/verizon/comments/sstq4c/5g_home_internet_dropping_out/hx3ir0s/ (Third Party Advisory)
- github.com/JousterL/SecWriteups/blob/main/Verizon LVSKIHP 5G Modem/readme.md (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-28376?
- CVE-2022-28376 is a high-severity vulnerability in Verizon Lvskihp, classified under Improper Authentication. CVSS score: 8.1/10. Published 2022-04-03.
- How severe is CVE-2022-28376?
- High severity. CVSS v3 base score is 8.1 out of 10.