Home/CVE/A vulnerability was found in Open5GS up to 2.7.5. Affected by this vulnerability is the function ngap_build_downlink_nas
CVE

CVE-2025-8804

A vulnerability was found in Open5GS up to 2.7.5. Affected by this vulnerability is the function ngap_build_downlink_nas

A vulnerability was found in Open5GS up to 2.7.5. Affected by this vulnerability is the function ngap_build_downlink_nas_transport of the component AMF. The manipulation leads to reachable assertion.

The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.7.6 is able to address this issue.

The identifier of the patch is bca0a7b6e01d254f4223b83831162566d4626428. It is recommended to upgrade the affected component.

MEDIUM · CVSS 5.3 EPSS 0.00551
Schedule remediation
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-617Reachable Assertion
▤

Affected Products & Versions

1
open5gs< 2.7.6
⚠

Public Exploits & PoCs

1
pocgithub.com · newdata_for_ngap.zipgithub.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 NVD10 Aug 2025 · 10:15 AM
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

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/ZHENGHAOHELLO/BugReport/blob/main/CVE-2025-8804
https://github.com/open5gs/open5gs/commit/bca0a7b6e01d254f4223b83831162566d4626428Patch
https://github.com/open5gs/open5gs/issues/3950Issue Tracking
https://github.com/open5gs/open5gs/issues/3950#issuecomment-3034693457Issue Tracking
https://github.com/open5gs/open5gs/releases/tag/v2.7.6Release Notes
https://vuldb.com/?ctiid.319333Permissions RequiredVDB Entry
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