CVE-2026-75438 json
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
published 2026-09-04 2 mo ago modified 2026-09-09 1 mo ago also EUVD-2026-71769
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
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
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/open5gs/open5gs/issues/4612 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-120 Buffer Copy without Checking Size of Input
References
- github.com /open5gs/open5gs/commit/7227b2f5b254160286798e058c189224360d99fc
-
github.com
/open5gs/open5gs/issues/4612
exploit
- github.com /hackeryounow/5GCVulDB/blob/main/smf_crash_uelocationtimestamp.sh
- gist.github.com /hackeryounow/c299d593b89fd6487cab4182c8aecabf
- github.com /hackeryounow/5GCVulDB/tree/main/CVE-2026-75438
Sources
- CVE List CVE-2026-75438
- NVD CVE-2026-75438
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