Home/CVE/A weakness has been identified in Open5GS up to 2.7.6. This vulnerability affects the function sgwc_s5c_handle_modify_be
CVE

CVE-2026-1522

A weakness has been identified in Open5GS up to 2.7.6. This vulnerability affects the function sgwc_s5c_handle_modify_be

A weakness has been identified in Open5GS up to 2.7.6. This vulnerability affects the function sgwc_s5c_handle_modify_bearer_response of the file src/sgwc/s5c-handler.c of the component SGWC. Executing a manipulation can lead to denial of service.

The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. This patch is called b19cf6a.

Applying a patch is advised to resolve this issue. The issue report is flagged as already-fixed.

MEDIUM · CVSS 5.3 EPSS 0.00086
Schedule remediation
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-404Improper Resource Shutdown or Release
▤

Affected Products & Versions

1
open5gs<= 2.7.6
⚠

Public Exploits & PoCs

4
pocgithub.com · 4266github.com
pocgithub.com · 4266#event-21968568116github.com
pocgithub.com · 4266#issue-3794991595github.com
pocvuldb.com · ?submit.738371vuldb.com
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · cna@vuldb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD28 Jan 2026 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/commit/b19cf6aPatch
https://vuldb.com/?ctiid.343193Permissions RequiredVDB Entry
https://vuldb.com/?id.343193Third Party AdvisoryVDB Entry
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