Denial of Service Vulnerability in Open5GS by Open5GS
CVE-2026-1737

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
2 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1737?

A vulnerability exists in Open5GS versions up to 2.7.6 in the CreateBearerRequest Handler functionality, specifically within the sgwc_s5c_handle_create_bearer_request function of the s5c-handler.c file. This issue can be exploited remotely, resulting in an assertion that could be triggered through manipulation, leading to a denial of service condition. Users are advised to apply the provided patch to mitigate any potential exploits, as the vulnerability details have been publicized.

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Deploy the Patch

Affected Version(s)

Open5GS 2.7.0

Open5GS 2.7.1

Open5GS 2.7.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-1737 - Proof of Concept

References

https://vuldb.com/?id.343636
vdb-entrytechnical-description
https://vuldb.com/?ctiid.343636
signaturepermissions-required
https://vuldb.com/?submit.741192
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LinZiyu (VulDB User)
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