CVE-2025-56394

HIGH
MEDIUM Priority: 0.03 BB Relevance: 75/100
Published: 2025-09-23 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

Free5gc 4.0.1 is vulnerable to Buffer Overflow. The AMF incorrectly validates the 5GS mobile identity, resulting in slice reference overflow.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
free5gc free5gc 4.0.1

References & Advisories (2)

https://github.com/free5gc/free5gc/issues/690
Exploit Issue Tracking Patch

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.42%
Raw Score 0.004170
Percentile 36.5%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00417
2026-11-12
0.00417
2026-11-10
0.00417
2026-11-09
0.00417
2026-11-08
0.00417
2026-11-07
0.00417
2026-11-06
0.00417
2026-11-05
0.00417

Intelligence Sources

nvd ref →