NULL pointer dereference in Open5gs
CVE-2025-55904
Open5GS v2.7.5, prior to commit 67ba7f92bbd7a378954895d96d9d7b05d5b64615, is vulnerable to a NULL pointer dereference when a multipart/related HTTP POST request with an empty HTTP body is sent to the SBI of either AMF, AUSF, BSF, NRF, NSSF, PCF, SMF, UDM, or UDR, resulting in a denial of service. This occurs in the parse_multipart function in lib/sbi/message.c.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (9.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/open5gs/open5gs/commit/67ba7f92bbd7a378954895d96d9d7b05d5b64615 (Patch)
- github.com/open5gs/open5gs/issues/3942 (Exploit, Issue Tracking)
- github.com/tsiamoulis/vuln-research/tree/main/CVE-2025-55904 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-55904?
- CVE-2025-55904 is a medium-severity vulnerability in Open5gs, classified under NULL Pointer Dereference. CVSS score: 4.0/10. Published 2025-09-17.
- How severe is CVE-2025-55904?
- Medium severity. CVSS v3 base score is 4.0 out of 10.
- Is CVE-2025-55904 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.