Out-of-Bounds Read Vulnerability in Open5GS by Open5GS
CVE-2026-78157

5.3MEDIUM

Key Information:

Vendor

Open5GS

Status
Open5gs
Vendor
CVE Published:
24 August 2026

What is CVE-2026-78157?

A security vulnerability has been identified in Open5GS version 2.8.0, specifically in the Rx AA-Request Handler's callback function (pcrf_rx_aar_cb) located in the file src/pcrf/pcrf-rx-path.c. This flaw allows attackers to perform out-of-bounds read operations, potentially exposing sensitive data. The vulnerability can be exploited remotely, heightening the risk to users. To mitigate this issue, it is essential to apply the patch available in commit c18dc6938bf63cc7374315d3dca303d92066e746.

Affected Version(s)

Open5GS 2.8.0

References

https://vuldb.com/vuln/394540
vdb-entrytechnical-description
https://vuldb.com/vuln/394540/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-78157
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

WeiYi (VulDB User)
.