CVE-2026-8186: A vulnerability was detected in Open5GS up to 2.7.7

Q: How do I fix CVE-2026-8186?

open5gs: upgrade to newer than 2.7.7. Exact commands for each OS are on this page.

Q: Is CVE-2026-8186 being exploited?

CVE-2026-8186 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-2026-8186 affect?

CVE-2026-8186 affects open5gs. Severity is medium (CVSS 5.3). A vulnerability was detected in Open5GS up to 2.7.7. This affects the function ogs_sbi_client_send_via_scp_or_sepp in the library lib/sbi/client.c of the component NF. Performing a manipulation results in out-of-bounds read. The attack is p

Q: How urgent is CVE-2026-8186?

Priority 40/100. Public exploit reference; Remotely exploitable, no login, no user action

This week

MEDIUM 5.3REMOTEUPGRADE

CVE-2026-8186 is a medium-severity flaw (CVSS 5.3) affecting open5gs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was detected in Open5GS up to 2.7.7. This affects the function ogs_sbi_client_send_via_scp_or_sepp in the library lib/sbi/client.c of the component NF. Performing a manipulation results in out-of-bounds read. The attack is possible to be carried out remotely. The patch is named d5bc487fcf9ea87d2b03f2ef95123af344773bfb. It is suggested to install a patch to address this issue.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-119, CWE-125
Published	2026-05-09
Last modified	2026-07-24

Publisher (CNA): VulDB · Vendor: open5gs

Last updated 2026-07-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-09 12:16 UTCPublished CVE record published
2026-07-24 08:10 UTCUpdated Record last modified

open5gs open5gs UPGRADE

Affected: <= 2.7.7

Fixed in: newer than 2.7.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy open5gs || rpm -q open5gs || open5gs --version

2. UPGRADE to newer than 2.7.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade open5gs

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade open5gs

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-2026-8186?

open5gs: upgrade to newer than 2.7.7. Exact commands for each OS are on this page.

Is CVE-2026-8186 being exploited?

CVE-2026-8186 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-2026-8186 affect?

CVE-2026-8186 affects open5gs. Severity is medium (CVSS 5.3). A vulnerability was detected in Open5GS up to 2.7.7. This affects the function ogs_sbi_client_send_via_scp_or_sepp in the library lib/sbi/client.c of the component NF. Performing a manipulation results in out-of-bounds read. The attack is p

How urgent is CVE-2026-8186?

Priority 40/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-8743 MEDIUM 6.3 UPGRADE A vulnerability was found in Open5GS up to 2.7.6
CVE-2026-8187 MEDIUM 5.3 UPGRADE A flaw has been found in Open5GS up to 2.7.7
CVE-2026-8252 MEDIUM 4.3 UPGRADE A vulnerability was determined in Open5GS up to 2.7.7
CVE-2026-8266 MEDIUM 4.3 UPGRADE A vulnerability was detected in Open5GS up to 2.7.7
CVE-2026-8267 MEDIUM 4.3 UPGRADE A flaw has been found in Open5GS up to 2.7.7

References

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