CVE-2025-55904

low-risk
Published 2025-09-17

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.

Do I need to act?

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0.07% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.0/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Open5Gs

References (3)

Patch https://github.com/open5gs/open5gs/commit/67ba7f92bbd7a378954895d96d9d7b05d5b646...
Exploit https://github.com/open5gs/open5gs/issues/3942
Exploit https://github.com/tsiamoulis/vuln-research/tree/main/CVE-2025-55904
19
/ 100
low-risk
Severity 14/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal