CVE-2022-4873 json
Stack based overflow on Netcomm router models NF20MESH, NF20, and NL1902
published 2023-01-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-52133
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.2%
- EPSS 7.2% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- netcommwireless nf20_firmware r6b025
- netcommwireless nf20mesh_firmware r6b025
- netcommwireless nl1902_firmware r6b025
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 19 mo ago
Exploit prediction
7.17% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Netcomm NF20
- Netcomm NF20MESH
- Netcomm NL1902
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/scarvell/advisories/blob/main/2022_netcomm_nf20mesh_unauth_rce.md
exploit, third-party-advisory
- kb.cert.org /vuls/id/986018
Sources
- CVE List CVE-2022-4873
- NVD CVE-2022-4873
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