How severe is CVE-2026-1587?

CVE-2026-1587 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-1587 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1587?

CVE-2026-1587 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1587?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-1587 have an EU (EUVD) identifier?

Yes. CVE-2026-1587 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4998.

When was CVE-2026-1587 published?

CVE-2026-1587 was published on 2026-01-29 and last updated on 2026-06-17.

CVE-2026-1587

CVE-2026-1587 is a medium-severity vulnerability in Open5gs with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-404.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 5.5
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4998
Weakness: CWE-404
Affected product: Open5gs
Published: 2026-01-29
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-1587?: 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.
How severe is CVE-2026-1587?: CVE-2026-1587 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-1587 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1587?: CVE-2026-1587 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1587?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1587 have an EU (EUVD) identifier?: Yes. CVE-2026-1587 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4998.
When was CVE-2026-1587 published?: CVE-2026-1587 was published on 2026-01-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

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