Denial of Service Vulnerability in Open5GS SMF by Open5GS
CVE-2026-2517

6.9MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
15 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2517?

A security flaw in Open5GS SMF has been identified, allowing remote attackers to exploit a weakness in the function ogs_gtp2_parse_tft within lib/gtp/v2/types.c. By manipulating the argument pf[0].content.length, an attacker may cause a denial of service, disrupting essential services. Despite early notification of the issue via an issue report, the Open5GS project has not provided a response, leaving users vulnerable to potential exploits, which have already been publicly released.

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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-2026-2517 - Proof of Concept

References

https://vuldb.com/?id.346108
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346108
signaturepermissions-required
https://vuldb.com/?submit.738332
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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