CVE-2026-7587 - Open5GS AMF nsmf-handler.c amf_nsmf_pdusession_handle_update_sm_context denial of service

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MEDIUM

Open5GS AMF nsmf-handler.c amf_nsmf_pdusession_handle_update_sm_context denial of service

Published May 1, 2026

5.3

MEDIUM

CVSS 4.0

EPSS 0.54%

Description

A vulnerability has been found in Open5GS up to 2.7.7. This vulnerability affects the function amf_nsmf_pdusession_handle_update_sm_context of the file /src/amf/nsmf-handler.c of the component AMF. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

Vendor Open5gs Product Open5GS Default
n/a
- Version
  2.7.0
  Status
  affected
  Constraints
  -
- Version
  2.7.1
  Status
  affected
  Constraints
  -
- Version
  2.7.2
  Status
  affected
  Constraints
  -
- Version
  2.7.3
  Status
  affected
  Constraints
  -
- Version
  2.7.4
  Status
  affected
  Constraints
  -
- Version
  2.7.5
  Status
  affected
  Constraints
  -
- Version
  2.7.6
  Status
  affected
  Constraints
  -
- Version
  2.7.7
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Open5gs

Open5GS

n/a

Version	Status	Constraints
2.7.0	affected	-
2.7.1	affected	-
2.7.2	affected	-
2.7.3	affected	-
2.7.4	affected	-
2.7.5	affected	-
2.7.6	affected	-
2.7.7	affected	-

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-404

Improper Resource Shutdown or Release

References (6)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-26699
Advisory
https://github.com/open5gs/open5gs/
product
https://github.com/open5gs/open5gs/issues/4408
exploitissue-trackingIssue Tracking
https://vuldb.com/submit/804339
third-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/360540
vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/360540/cti
signaturepermissions-requiredPermissions RequiredVDB Entry

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-26699		Advisory
https://github.com/open5gs/open5gs/		product
https://github.com/open5gs/open5gs/issues/4408		exploitissue-trackingIssue Tracking
https://vuldb.com/submit/804339		third-party-advisoryThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/360540		vdb-entrytechnical-descriptionThird Party AdvisoryVDB Entry
https://vuldb.com/vuln/360540/cti		signaturepermissions-requiredPermissions RequiredVDB Entry