Medium severity · published Feb 2, 2026
CVE-2026-1737
Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion
5.3
CVSS
0.6%
EPSS
No
On KEV
Description
A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function sgwc_s5c_handle_create_bearer_request of the file /src/sgwc/s5c-handler.c of the component CreateBearerRequest Handler. Performing a manipulation results in reachable assertion. Remote exploitation of the attack is possible. The exploit is now public and may be used. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Open5GS · Open5gs
2.7.0; 2.7.1; 2.7.2; 2.7.3; 2.7.4; 2.7.5; +1 more · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1737
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1737
Product
https://github.com/open5gs/open5gs/
Exploit
https://github.com/open5gs/open5gs/issues/4271
Issue Tracking
https://github.com/open5gs/open5gs/issues/4271#event-21968630023
Exploit
https://github.com/open5gs/open5gs/issues/4271#issue-3795147720
Permissions Required
https://vuldb.com/?ctiid.343636
Third Party Advisory
https://vuldb.com/?id.343636
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