Buffer overflow in Netcomm Nf20
CVE-2022-4873
On Netcomm router models NF20MESH, NF20, and NL1902 a stack based buffer overflow affects the sessionKey parameter. By providing a specific number of bytes, the instruction pointer is able to be overwritten on the stack and crashes the application at a known location.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.072 (94.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.072 · newest: 0.072 · change: 0.000
Affected products
- Netcomm Nf20 — versions R6B025
- Netcomm Nf20mesh — versions R6B025
- Netcomm Nl1902 — versions R6B025
- Netcommwireless Nf20
- Netcommwireless Nf20 Firmware
- Netcommwireless Nf20mesh
- Netcommwireless Nf20mesh Firmware
- Netcommwireless Nl1902
- Netcommwireless Nl1902 Firmware
Weakness classification (CWE)
References
- github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.md (Exploit, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-4873?
- CVE-2022-4873 is a critical-severity vulnerability in Netcomm Nf20, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2023-01-11.
- How severe is CVE-2022-4873?
- Critical severity. CVSS v3 base score is 9.8 out of 10.