Open5GS 2.7.0 AMF src/amf/ngap-path.c ngap_send_to_nas denial of service

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.80

Summaryinfo

A vulnerability described as critical has been identified in Open5GS 2.7.0. The impacted element is the function ngap_send_to_nas of the file src/amf/ngap-path.c of the component AMF. Such manipulation leads to denial of service. This vulnerability is referenced as CVE-2026-71675. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Open5GS 2.7.0. Affected by this issue is the function ngap_send_to_nas of the file src/amf/ngap-path.c of the component AMF. The manipulation 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. CVE summarizes:

An issue in Open5GS v.2.7.0 allows a remote attacker to cause a denial of service via the ngap_send_to_nas() function in src/amf/ngap-path.c

The advisory is available at gist.github.com. This vulnerability is handled as CVE-2026-71675 since 08/07/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

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

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

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/07/2026 CVE reserved
08/18/2026 +11 days Advisory disclosed
08/18/2026 +0 days VulDB entry created
08/18/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2026-71675 (🔒)
GCVE (CVE): GCVE-0-2026-71675
GCVE (VulDB): GCVE-100-391970

Entryinfo

Created: 08/18/2026 22:27
Changes: 08/18/2026 22:27 (54)
Complete: 🔍
Cache ID: 216::103

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

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