CVE-2026-1587

Name: CVE-2026-1587
Creator: NVD / NIST
Published: 2026-01-29T13:15:53.717+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2026-1587 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability has been found in Open5GS up to 2.7.6. The affected element is the function sgwc_s11_handle_modify_bearer_request of the file /sgwc/s11-handler.c of the component SGWC. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

A vulnerability has been found in Open5GS up to 2.7.6. The affected element is the function sgwc_s11_handle_modify_bearer_request of the file /sgwc/s11-handler.c of the component SGWC. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Applying a patch is the recommended action to fix this issue. The issue report is flagged as already-fixed.

Metrics

CVSS 3.1

7.5/10

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

CVSS 4.0

5.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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

EPSS Probability

0.51%

39.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-404

Affected Software

Vendor	Product	Versions
Open5gs	Open5gs	<= 2.7.6

References

https://github.com/open5gs/open5gs/
https://github.com/open5gs/open5gs/issues/4272Exploit, Issue Tracking, Vendor Advisory
https://github.com/open5gs/open5gs/issues/4272#event-21968635948Exploit, Issue Tracking, Vendor Advisory
https://github.com/open5gs/open5gs/issues/4272#issue-3795156752Exploit, Issue Tracking, Vendor Advisory
https://vuldb.com/?ctiid.343350Permissions Required, VDB Entry
https://vuldb.com/?id.343350Third Party Advisory, VDB Entry
https://vuldb.com/?submit.738376Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Jan 29, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-1587?

How severe is CVE-2026-1587?

CVE-2026-1587 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2026-1587?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-1587?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST