CVE-2022-21742 json
Realtek USB FE/1GbE/2.5GbE/5GbE NIC Family - Buffer Overflow
published 2022-06-20 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-26906
- cvss
- 6.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
Realtek USB driver has a buffer overflow vulnerability due to insufficient parameter length verification in the API function. An unauthenticated LAN attacker can exploit this vulnerability to disrupt services.
Patch / fix
- realtek rtl8156_firmware 10.50
- realtek rtl8156b_firmware 10.50
- realtek rtl8153_firmware 10.50
- realtek rtl8153b_firmware 10.50
- realtek rtl8154_firmware 10.50
- realtek rtl8154b_firmware 10.50
- realtek rtl8152b_firmware 10.50
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 3.3 | AV:A/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- Realtek USB FE/1GbE/2.5GbE/5GbE NIC Family
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
-
twcert.org.tw
/tw/cp-132-6057-1cd0d-1.html
third-party-advisory
Sources
- CVE List CVE-2022-21742
- NVD CVE-2022-21742
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