PT-2026-4469 · Unknown · Free5Gc Nrf

Published 2026-01-23 · Updated 2026-02-11 · CVE-2025-66719

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Free5gc NRF version 1.4.0

Description An issue exists in the access-token generation logic of Free5gc. The AccessTokenScopeCheck() function within the file internal/sbi/processor/access token.go bypasses scope validation when a crafted targetNF value is used. This allows an attacker to obtain an access token with any arbitrary scope.

Recommendations Update to a newer version that contains a fix for this vulnerability. As a temporary workaround, consider restricting or carefully validating the targetNF value used in the access token generation process.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2025-66719

Affected Products

Free5Gc Nrf

References · 7

• 🔥 https://github.com/free5gc/free5gc/issues/736 · Exploit
• https://github.com/free5gc/nrf/pull/73 · Patch
• https://osv.dev/vulnerability/CVE-2025-66719 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-66719 · Security Note
• https://t.me/cveNotify/151754 · Telegram Post
• https://twitter.com/CVEnew/status/2015362491434586143 · Twitter Post
• https://twitter.com/TheHackerWire/status/2014796439537516587 · Twitter Post