CVE-2026-8744

🔶 medium

Summary

A vulnerability was determined in Open5GS up to 2.7.7. Affected is the function ogs_sbi_subscription_data_add/ogs_sbi_nf_service_add in the library /lib/sbi/context.c of the component NRF. Executing a manipulation can lead to denial of service. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. This patch is called 819db11a08b9736a3576c4f99ceb28f7eb99523a. A patch should be applied to remediate this issue.

CVSS Score

4.3

Medium

EPSS Score

0.1

Exploit Probability

Published Date

2026-05-17

First Seen: 2026-05-18

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 5.4% of all 321,566 vulnerabilities in our database.

#304,103

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: May 18, 2026

🔍 Exploitation Status

Poc

Proof-of-concept available

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

🏆 Discovered By

ZiyuLin (VulDB User) (reporter)

SSVC data provided by CISA

Last Modified 2026-05-18

Source NVD 🔗

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

CVSS Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CWE IDs (Weakness Types)

CWE-404

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
open5gs	open5gs	Affected	< 2.7.7

🔗 References 9

https://github.com/open5gs/open5gs/

Product

https://github.com/open5gs/open5gs/commit/819db11a08...

Patch

https://github.com/open5gs/open5gs/issues/4465

Exploit Issue Tracking

https://github.com/open5gs/open5gs/issues/4466

Exploit Issue Tracking

https://github.com/open5gs/open5gs/pull/4534

Issue Tracking Patch

https://vuldb.com/submit/817029

Third Party Advisory VDB Entry

https://vuldb.com/submit/817030

Third Party Advisory VDB Entry

https://vuldb.com/vuln/364331

Third Party Advisory VDB Entry

https://vuldb.com/vuln/364331/cti

Permissions Required VDB Entry

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-8728	🔶 medium	4.3	0.1	A security vulnerability has been detected in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_discover...	2026-05-17
CVE-2026-8729	🔶 medium	4.3	0.1	A vulnerability was detected in Open5GS up to 2.7.7. This affects an unknown function in the library /lib/sbi/message.c ...	2026-05-17
CVE-2026-8730	🔶 medium	4.3	0.0	A flaw has been found in Open5GS up to 2.7.6. This impacts the function ogs_sbi_nf_instance_set_id in the library /lib/s...	2026-05-17
CVE-2026-8731	🔶 medium	4.3	0.0	A vulnerability has been found in Open5GS up to 2.7.7. Affected is the function ogs_sbi_client_add in the library /lib/s...	2026-05-17
CVE-2026-8743	🔶 medium	6.3	0.0	A vulnerability was found in Open5GS up to 2.7.6. This impacts the function ran_ue_find_by_amf_ue_ngap_id of the file sr...	2026-05-17
CVE-2026-8745	🔶 medium	4.3	0.0	A vulnerability was identified in Open5GS up to 2.7.7. Affected by this vulnerability is the function ogs_timer_add in t...	2026-05-17

These CVEs affect the same products