CVE-2026-71676

HIGH
MEDIUM Priority: 0.03 BB Relevance: 75/100
Published: 2026-08-18 Modified: 2026-11-09 First seen: 2026-11-09 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

Buffer Overflow vulnerability in Open5GS v.2.7.0 allows a remote attacker to cause a denial of service via the NAS 5GS decoder chain, triggered when the message type byte of a NAS PDU is mutated

Weakness Classification (1)

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

0.45%
Raw Score 0.004510
Percentile 39.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00451
2026-11-12
0.00451
2026-11-10
0.00451
2026-11-09
0.00546

Intelligence Sources

nvd ref →