CVE-2026-8288

Description

A vulnerability was determined in Open5GS up to 2.7.7. This affects the function gsm_handle_pdu_session_modification_qos_flow_descriptions of the file src/smf/gsm-handler.c of the component SMF. Executing a manipulation of the argument n1SmMsg can lead to denial of service. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0006

Probability of exploitation

0.18%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-404 CWE-404

Affected Products

Vendor	Product	Versions
open5gs	open5gs	< 2.7.7

References

Advisories & Patches

https://github.com/open5gs/open5gs/pull/4513

Exploits

https://github.com/open5gs/open5gs/issues/4452

Other References

https://github.com/open5gs/open5gs/ https://vuldb.com/submit/808489 https://vuldb.com/vuln/362585 https://vuldb.com/vuln/362585/cti

Frequently Asked Questions

What is CVE-2026-8288? +

A vulnerability was determined in Open5GS up to 2.7.7. This affects the function gsm_handle_pdu_session_modification_qos_flow_descriptions of the file src/smf/gsm-handler.c of the component SMF. Executing a manipulation of the argument n1SmMsg can lead to denial of service. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-8288? +

CVE-2026-8288 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0006, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-8288? +

CVE-2026-8288 affects products from open5gs, specifically: open5gs. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-8288? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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