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Open5gs CVE-2026-2521

MEDIUM
Buffer Overflow (CWE-119)
2026-02-15 cna@vuldb.com
Memory Corruption Open5gs
5.3
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 18, 2026 - 19:42 vuln.today
Public exploit code
CVE Published
Feb 15, 2026 - 23:16 nvd
MEDIUM 5.3

DescriptionCVE.org

A weakness has been identified in Open5GS up to 2.7.6. This issue affects the function sgwc_s5c_handle_create_session_response of the component SGW-C. Executing a manipulation can lead to memory corruption. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

AnalysisAI

Memory corruption in Open5GS versions up to 2.7.6 allows remote attackers to trigger a denial of service condition by manipulating the SGW-C session creation handler, with public exploit code already available. The vulnerability requires no authentication or user interaction and currently lacks a vendor patch, leaving affected deployments vulnerable to remote availability attacks.

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Vulnerability AssessmentAI

Risk Assessment CVSS 5.3 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A remote attacker could exploit this vulnerability to memory corruption.
Remediation Monitor vendor advisories for a patch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 30 days: Identify affected systems running Open5GS and apply vendor patches as part of regular patch cycle. …

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CVE-2026-2521 vulnerability details – vuln.today
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