VDB-291855 · CVE-2025-23019 · EUVD-2025-3077

IETF IPv6 IPv6-in-IPv4 Tunneling verification of source

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in IETF IPv6. This vulnerability affects unknown code of the component IPv6-in-IPv4 Tunneling. Performing a manipulation results in verification of source. This vulnerability is known as CVE-2025-23019. Remote exploitation of the attack is possible. No exploit is available. Due to its background and reception, this vulnerability has an historic impact.

Detailsinfo

A vulnerability, which was classified as problematic, was found in IETF IPv6 (the affected version is unknown). This affects an unknown code of the component IPv6-in-IPv4 Tunneling. The manipulation with an unknown input leads to a verification of source vulnerability. CWE is classifying the issue as CWE-940. The product establishes a communication channel to handle an incoming request that has been initiated by an actor, but it does not properly verify that the request is coming from the expected origin. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

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

It is possible to read the advisory at datatracker.ietf.org. This vulnerability is uniquely identified as CVE-2025-23019 since 01/10/2025. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/17/2025). Due to its background and reception, this vulnerability has a historic impact.

The vulnerability scanner Nessus provides a plugin with the ID 242166 (Juniper Junos OS Multiple Vulnerabilities (JSA100061)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (242166) and EUVD (EUVD-2025-3077). Further details are available at ispreview.co.uk. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

IETF

Name

IPv6

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.8
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (MITRE): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Verification of source
CWE: CWE-940
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 242166
Nessus Name: Juniper Junos OS Multiple Vulnerabilities (JSA100061)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/10/2025 🔍
01/14/2025 +4 days 🔍
01/14/2025 +0 days 🔍
07/17/2025 +184 days 🔍

Sourcesinfo

Advisory: datatracker.ietf.org
Status: Confirmed

CVE: CVE-2025-23019 (🔍)
GCVE (CVE): GCVE-0-2025-23019
GCVE (VulDB): GCVE-100-291855
EUVD: 🔍
Misc.: 🔍

Entryinfo

Created: 01/14/2025 22:57
Updated: 07/17/2025 03:04
Changes: 01/14/2025 22:57 (60), 01/16/2025 15:51 (3), 05/29/2025 12:32 (1), 07/17/2025 03:04 (2)
Complete: 🔍
Cache ID: 216::103