Security
Headlines
HeadlinesLatestCVEs

Headline

CVE-2022-45853: Zyxel security advisory for privilege escalation vulnerability in GS1900 series switches | Zyxel Networks

The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version

V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local attacker with administrator privileges to execute some system commands as ‘root’ on a vulnerable device via SSH.

CVE
#vulnerability#auth#ssh

CVE: CVE-2022-45853****Summary

Zyxel has released patches for GS1900 series switches affected by a privilege escalation vulnerability. Users are advised to install them for optimal protection.

What is the vulnerability?

The privilege escalation vulnerability in the Zyxel GS1900 series switches could allow a local authenticated attacker with administrator privileges to execute some system commands as the “root” user on a vulnerable device via SSH. Although SSH access is disabled by default, which would make a network immune from the attack, users are still recommended to upgrade to the latest firmware for optimal protection.

What versions are vulnerable—and what should you do?

After a thorough investigation, we’ve identified the vulnerable switches that are within their vulnerability support period and released patches to address the vulnerability, as shown in the table below.

Got a question?

Please contact your local service rep or visit Zyxel’s Community for further information or assistance.

Acknowledgment

Thanks to Justin Aarden for reporting the issue to us.

Revision history

2023-6-6: Initial release.

Have a question?

We are always here to help!

Contact us

Related news

CVE-2023-5593: Security Advisories | Zyxel Networks

The out-of-bounds write vulnerability in the Windows-based SecuExtender SSL VPN Client software version 4.0.4.0 could allow an authenticated local user to gain a privilege escalation by sending a crafted CREATE message.

Zyxel Firewalls Under Attack! Urgent Patching Required

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday placed two recently disclosed flaws in Zyxel firewalls to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The vulnerabilities, tracked as CVE-2023-33009 and CVE-2023-33010, are buffer overflow vulnerabilities that could enable an unauthenticated attacker to cause a

CVE: Latest News

CVE-2023-50976: Transactions API Authorization by oleiman · Pull Request #14969 · redpanda-data/redpanda
CVE-2023-6905
CVE-2023-6903
CVE-2023-6904
CVE-2023-3907