Multiple CVEs Identified in IPv6 Implementation by Microsoft
Article Content
Browse articles 
Microsoft has published information on two critical vulnerabilities in the IPv6 implementation. CVE-2025-40158 and CVE-2025-40135, both published on November 12, 2025, involve the use of RCU in the ip6_output() and ip6_xmit() functions, respectively. Affected systems may be at risk due to these vulnerabilities.
Ask AI about this cluster
Answers cite the sources they use
Updated 211d ago How this analysis works
Timeline
2025-11-12
CVE-2025-40158 and CVE-2025-40135 published
2026-02-18
Articles published detailing the vulnerabilities
More articles in this cluster (2)
Following this threat?
Track CVE-2025-40135 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…