Critical severity · published Jan 11, 2023
CVE-2022-4873
On Netcomm router models NF20MESH, NF20, and NL1902 a stack based buffer overflow affects the sessionKey parameter
9.8
CVSS
7.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)7.2% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NF
Nf20 Firmware · Netcommwireless
before r6b025 · source: NVD
NF
Nf20mesh Firmware · Netcommwireless
before r6b025 · source: NVD
NF
Nl1902 Firmware · Netcommwireless
before r6b025 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-4873
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-4873
Exploit
https://github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.md
www.kb.cert.org
https://www.kb.cert.org/vuls/id/986018
More from Nf20 Firmware
7.5
CVE-2022-4874
Authentication bypass in Netcomm router models NF20MESH, NF20, and NL1902 allows an unauthenticated user to access content