---
id: CVE-2026-75438
title: >-
  Buffer Overflow vulnerability in Open5GS v2.7.7 allows a remote attacker to
  cause a denial of service via the ogs_sbi_time_parse() function
summary: >-
  Buffer Overflow vulnerability in Open5GS v2.7.7 allows a remote attacker to
  cause a denial of service via the ogs_sbi_time_parse() function
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-120
published: '2026-09-04'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T16:04:24.933'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75438'
references:
  - url: 'https://gist.github.com/hackeryounow/c299d593b89fd6487cab4182c8aecabf'
    label: cve@mitre.org
  - url: >-
      https://github.com/hackeryounow/5GCVulDB/blob/main/smf_crash_uelocationtimestamp.sh
    label: cve@mitre.org
  - url: 'https://github.com/hackeryounow/5GCVulDB/tree/main/CVE-2026-75438'
    label: cve@mitre.org
  - url: >-
      https://github.com/open5gs/open5gs/commit/7227b2f5b254160286798e058c189224360d99fc
    label: cve@mitre.org
  - url: 'https://github.com/open5gs/open5gs/issues/4612'
    label: cve@mitre.org
  - url: 'https://github.com/open5gs/open5gs/issues/4612'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.0082
epssPercentile: 0.55462
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-08T14:02:30.627340Z'
ingestedAt: '2026-09-08T15:33:26.964Z'
---

## Overview

Buffer Overflow vulnerability in Open5GS v2.7.7 allows a remote attacker to cause a denial of service via the ogs_sbi_time_parse() function

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.