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CVE-2025-15684

Open5GS CER init.c diam_log_func assertion

MEDIUM
5.3
CVSS Score
Published: August 12, 2026 at 02:00 AM UTC
Updated: September 29, 2026 at 11:10 AM UTC
1 product affected across 1 vendorOpen5GS

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.7%
SSVC
PoC

Description

A vulnerability was detected in Open5GS up to 2.7.6. Affected is the function diam_log_func of the file lib/diameter/common/init.c of the component CER Handler. The manipulation results in reachable assertion. The attack can be executed remotely. The exploit is now public and may be used. Upgrading to version 2.7.7 is able to address this issue. The patch is identified as c1a803516a3c0485696cb9bcca7a80ad857c7383. It is advisable to upgrade the affected component.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Open5GS· OPEN5GS
95%
2.7.02.7.12.7.22.7.32.7.42.7.52.7.6
Vendor states this is fixed in 2.7.7 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (8)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/387277
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/387277/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2025-15684
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/867102
ExploitIssue Tracking
Source: cverecord
https://github.com/open5gs/open5gs/issues/4155
Patch
Source: cverecord
https://github.com/open5gs/open5gs/commit/c1a803516a3c0485696cb9bcca7a80ad857c7383
Patch
Source: cverecord
https://github.com/open5gs/open5gs/releases/tag/v2.7.7
Product
Source: cverecord
https://github.com/open5gs/open5gs/

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-617

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