Multiple CVEs Affecting VLAN Implementations Published
Article Content
Browse articles 
Two vulnerabilities related to VLAN implementations have been published. CVE-2025-21920, published on April 1, 2025, enforces underlying device types, while CVE-2025-23163, published on May 1, 2025, addresses flag propagation on open. Affected systems may experience issues related to VLAN configurations.
Ask AI about this cluster
Answers cite the sources they use
Updated 213d ago How this analysis works
Timeline
2025-04-01
CVE-2025-21920 published
2025-05-01
CVE-2025-23163 published
2026-02-18
Information published about both CVEs
More articles in this cluster (2)
Following this threat?
Track CVE-2025-21920 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.
Free account · no card needed
Continue Reading
CVE-2015-3306 Exploited in ProFTPD FTP Servers CVE-2015-3306, a vulnerability in ProFTPD 1.3.5, allows remote attackers to read and write arbitrary files using the SITE CPFR and SITE CPTO commands. This exploit can lead to unauthorized access and potential remote code execution, as the commands are executed with the privileges of the ProFTPD service. Active… 
CISA Mandates Urgent Patching of Five Critical Flaws Exploited by Flax Typhoon The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has ordered federal agencies to patch five critical vulnerabilities by October 11, 2026, following exploitation by the China-linked hacking group Flax Typhoon. The vulnerabilities, added to CISA's Known Exploited Vulnerabilities (KEV) catalog, include…