How severe is CVE-2025-23019?

CVE-2025-23019 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-23019 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-23019?

CVE-2025-23019 affects Ietf Ipv6. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-23019?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-23019 have an EU (EUVD) identifier?

Yes. CVE-2025-23019 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-3077.

When was CVE-2025-23019 published?

CVE-2025-23019 was published on 2025-01-14 and last updated on 2026-06-17.

CVE-2025-23019

CVE-2025-23019 is a medium-severity vulnerability in Ietf Ipv6 with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-940.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-3077
Weakness: CWE-940
Affected product: Ietf Ipv6
Published: 2025-01-14
Last modified: 2026-06-17

Description

IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.

Frequently asked questions

What is CVE-2025-23019?: IPv6-in-IPv4 tunneling (RFC 4213) allows an attacker to spoof and route traffic via an exposed network interface.
How severe is CVE-2025-23019?: CVE-2025-23019 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-23019 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-23019?: CVE-2025-23019 affects Ietf Ipv6. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-23019?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-23019 have an EU (EUVD) identifier?: Yes. CVE-2025-23019 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-3077.
When was CVE-2025-23019 published?: CVE-2025-23019 was published on 2025-01-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ietf:ipv6:-:*:*:*:*:*:*:*

More vulnerabilities in Ietf Ipv6

CVE-2016-10142 — High (CVSS 8.6): An issue was discovered in the IPv6 protocol specification, related to ICMP Packet Too Big (PTB) messages. (The scope…
CVE-2007-2242 — High (CVSS 7.8): The IPv6 protocol allows remote attackers to cause a denial of service via crafted IPv6 type 0 route headers…
CVE-2025-23018 — Medium (CVSS 5.4): IPv4-in-IPv6 and IPv6-in-IPv6 tunneling (RFC 2473) do not require the validation or verification of the source of a…

All CVEs affecting Ietf Ipv6 →

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