CVE-2025-69247: free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC pro

Q: How do I fix CVE-2025-69247?

go-upf: upgrade to 1.2.8. Exact commands for each OS are on this page.

Q: Is CVE-2025-69247 being exploited?

CVE-2025-69247 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-69247 affect?

CVE-2025-69247 affects go-upf. Severity is high (CVSS 7.5). free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attac

Q: How urgent is CVE-2025-69247?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2025-69247 is a high-severity flaw (CVSS 7.5) affecting go-upf. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attackers can crash the UPF network element by sending a specially crafted PFCP Session Modification Request with an invalid SDF Filter length field. This causes a heap buffer overflow, resulting in complete service

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-122
Published	2026-02-23
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: free5gc

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-02-23 22:16 UTCPublished CVE record published
2026-06-17 10:00 UTCUpdated Record last modified

free5gc go-upf UPGRADE

Affected: < 1.2.8

Fixed in: 1.2.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy go-upf || rpm -q go-upf || go-upf --version

2. UPGRADE to 1.2.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade go-upf

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade go-upf

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-69247?

go-upf: upgrade to 1.2.8. Exact commands for each OS are on this page.

Is CVE-2025-69247 being exploited?

CVE-2025-69247 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-69247 affect?

CVE-2025-69247 affects go-upf. Severity is high (CVSS 7.5). free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. Remote attac

How urgent is CVE-2025-69247?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2025-69232 HIGH 7.5 UPGRADE UPGRADE free5GC is an open-source project for 5th generation (5G) mobile core networks

References

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