CVE-2026-1521

low-risk
Published 2026-01-28

A security flaw has been discovered in Open5GS up to 2.7.6. This affects the function sgwc_s5c_handle_bearer_resource_failure_indication of the file src/sgwc/s5c-handler.c of the component SGWC. Performing a manipulation results in denial of service. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The patch is named 69b53add90a9479d7960b822fc60601d659c328b. It is recommended to apply a patch to fix this issue.

Do I need to act?

-
0.10% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Open5Gs

References (8)

https://github.com/open5gs/open5gs/
Patch https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c32...
Exploit https://github.com/open5gs/open5gs/issues/4268
Exploit https://github.com/open5gs/open5gs/issues/4268#event-21989483261
Exploit https://github.com/open5gs/open5gs/issues/4268#issue-3795012861
Permissions Required https://vuldb.com/?ctiid.343192
Third Party Advisory https://vuldb.com/?id.343192
Exploit https://vuldb.com/?submit.738370
26
/ 100
low-risk
Severity 21/34 · High
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal