MEDIUM
CVE-2025-23019
CWE-940Published: January 14, 2025· Updated: Jun 17, 2026
6.5
CVSS v3.1
Official Description
IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.
Technical Analysis
CVE-2025-23019 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
Affected Vendors & Products
ietf1 product(s)
ipv6
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
All References (4)
→
https://datatracker.ietf.org/doc/html/rfc4213Technical Description
→
https://papers.mathyvanhoef.com/usenix2025-tunnels.pdfTechnical Description
→
https://www.top10vpn.com/research/tunneling-protocol-vulnerability/Technical Description
Quick Facts
CVE IDCVE-2025-23019
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-940
CISA KEVNo
Affected1 vendor(s)
PublishedJan 14, 2025
Related CVEs (CWE-940)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-23019 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.