CVE-2022-4873
CVE-2022-4873 is a critical-severity vulnerability in Netcommwireless Nf20 Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 7% (94th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Netcommwireless Nf20 Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2022-4873?
- CVE-2022-4873 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2022-4873 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2022-4873?
- CVE-2022-4873 primarily affects Netcommwireless Nf20 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2022-4873?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2022-4873 published?
- CVE-2022-4873 was published on 2023-01-11 and last updated on 2026-06-17.
References
- https://github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.md
- https://www.kb.cert.org/vuls/id/986018
Affected products (3)
- cpe:2.3:o:netcommwireless:nf20_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netcommwireless:nf20mesh_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:netcommwireless:nl1902_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Netcommwireless Nf20 Firmware
- CVE-2022-4874 — High (CVSS 7.5): Authentication bypass in Netcomm router models NF20MESH, NF20, and NL1902 allows an unauthenticated user to access…
All CVEs affecting Netcommwireless Nf20 Firmware →
Other CWE-787 (Out-of-bounds Write) vulnerabilities
- CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
- CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src modules). This vulnerability is…
- CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
- CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
- CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
- CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…