CVE-2023-22922 Memory corruption in NBG-418N v2 firmware
Remote unauthenticated attackers can cause denial of service via crafted packets if Telnet is enabled on Zyxel NBG-418N v2 devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-22922?
CVE-2023-22922 is a high-severity memory corruption vulnerability in Zyxel NBG-418N v2 firmware, published on 1 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-120
Which versions are affected by CVE-2023-22922?
It affects 1 product.
Products include Zyxel Nbg-418n Firmware.
How do I fix CVE-2023-22922?
No fix has been published for CVE-2023-22922 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-22922 being exploited?
There is no known exploitation of CVE-2023-22922 in the wild and no public exploit code.
Other vulnerabilities in Zyxel NBG-418N v2 firmware
Sources
Also known as GHSA-gchg-8x7r-rq44.