Buffer overflow in Zyxel Nbg-418n
CVE-2023-22922
A buffer overflow vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote unauthenticated attacker to cause DoS conditions by sending crafted packets if Telnet is enabled on a vulnerable device.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Zyxel Nbg-418n — versions v2
- Zyxel Nbg-418n Firmware
- Zyxel Nbg-418n V2 Firmware — versions < V1.00(AARP.14)C0
Weakness classification (CWE)
References
- www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for… (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-22922?
- CVE-2023-22922 is a high-severity vulnerability in Zyxel Nbg-418n, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2023-05-01.
- How severe is CVE-2023-22922?
- High severity. CVSS v3 base score is 7.5 out of 10.