Open5GS up to 2.7.6 SGW-C sgwc_s5c_handle_create_session_response memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Open5GS up to 2.7.6. Impacted is the function sgwc_s5c_handle_create_session_response of the component SGW-C. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2026-2521. It is possible to initiate the attack remotely. Furthermore, there is an exploit 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 2.7.6 and classified as critical. This issue affects the function sgwc_s5c_handle_create_session_response of the component SGW-C. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-2521. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

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-2026-6141). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 5.3
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/15/2026 Advisory disclosed
02/15/2026 +0 days VulDB entry created
02/20/2026 +5 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 4282
Status: Not defined

CVE: CVE-2026-2521 (🔒)
GCVE (CVE): GCVE-0-2026-2521
GCVE (VulDB): GCVE-100-346109
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/15/2026 09:41
Updated: 02/20/2026 06:06
Changes: 02/15/2026 09:41 (56), 02/16/2026 01:37 (31), 02/19/2026 19:04 (1), 02/20/2026 06:06 (12)
Complete: 🔍
Submitter: LinZiyu
Cache ID: 216::103

Submitinfo

Accepted

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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