CVE-2022-4873: netcomm nf20 Out-of-bounds Write
CVSS: 9.8v3.1CriticalModified
Published 11-01-2023Last modified 04-11-2025
Vulnerability summary
CVE-2022-4873 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in netcomm nf20. EPSS estimates a 7.17% chance of exploitation in the next 30 days, higher than 94.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
7.17%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 11-01-2023PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
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 metrics
2 scores · 2 sources · 1 versionCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
7.17%
Chance of exploitation in the next 30 days
Percentile
94%
Versus all other CVEs
30-day change
0.00 pp
From 7.17% on 21-09-2026
21-09-202621-10-2026
EPSS score7.17%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundAdvisories
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Netcommwireless3 products
- nf20_firmware< r6b025
- nf20mesh_firmware< r6b025
- nl1902_firmware< r6b025
2 vendors · 6 products
References
2 links- github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.mdExploitThird Party Advisory