VDB-360530 · Submit #804322 · CVE-2026-7583

Open5GS up to 2.7.7 BSF /src/bsf/context.c bsf_sess_find_by_ipv6prefix ipv6Prefix denial of service

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.
3.9	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Open5GS up to 2.7.7. Impacted is the function bsf_sess_find_by_ipv6prefix of the file /src/bsf/context.c of the component BSF. Such manipulation of the argument ipv6Prefix leads to denial of service. This vulnerability is referenced as CVE-2026-7583. It is possible to launch the attack remotely. Furthermore, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability was found in Open5GS up to 2.7.7. It has been rated as problematic. Affected by this issue is the function bsf_sess_find_by_ipv6prefix of the file /src/bsf/context.c of the component BSF. The manipulation of the argument ipv6Prefix with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-7583. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

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 vulnerability database at EUVD (EUVD-2026-26661). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Open5GS

Version

Website

Product: https://github.com/open5gs/open5gs/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/01/2026 Advisory disclosed
05/01/2026 +0 days VulDB entry created
05/02/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4401
Status: Not defined

CVE: CVE-2026-7583 (🔒)
GCVE (CVE): GCVE-0-2026-7583
GCVE (VulDB): GCVE-100-360530
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/01/2026 09:08
Updated: 05/02/2026 06:29
Changes: 05/01/2026 09:08 (58), 05/02/2026 06:29 (1)
Complete: 🔍
Submitter: ZiyuLin
Cache ID: 216::103

Submitinfo

Accepted

Submit #804322: Open5gs BSF v2.7.7 Denial of Service (by ZiyuLin)

If you want to get best quality of vulnerability data, you may have to visit VulDB.