HOMEVULNERABILITIESCVE-2026-8186
HIGH

CVE-2026-8186

CWE-119Published: May 9, 2026· Updated: May 13, 2026

7.5
CVSS v3.1
EPSS:0.05%probability of exploitation in 30 daysPercentile:14.3th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-8186 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

open5gs1 product
open5gs
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/open5gs/open5gs/commit/d5bc487fcf9ea87d2b03f2ef95123af344773bfb
PATCHhttps://github.com/open5gs/open5gs/pull/4496
ADVISORYhttps://vuldb.com/submit/800024
ADVISORYhttps://vuldb.com/vuln/362338

All References (8)

→
https://github.com/open5gs/open5gs/Product
→
https://github.com/open5gs/open5gs/commit/d5bc487fcf9ea87d2b03f2ef95123af344773bfbPatch
→
https://github.com/open5gs/open5gs/issues/4491Exploit · Issue Tracking
→
https://github.com/open5gs/open5gs/pull/4496Issue Tracking · Patch
→
https://vuldb.com/submit/800024Third Party Advisory · VDB Entry
→
https://vuldb.com/vuln/362338Third Party Advisory · VDB Entry
→
https://vuldb.com/vuln/362338/ctiPermissions Required · VDB Entry
→
https://github.com/open5gs/open5gs/issues/4491Exploit · Issue Tracking

Quick Facts

CVE IDCVE-2026-8186
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-119
CISA KEVNo
EPSS (30d)0.05%
Affected1 vendor
PublishedMay 9, 2026

Related CVEs (CWE-119)

CVE-2026-4226
9.8
CVE-2026-10063
9.8
CVE-2026-8836
9.8
CVE-2026-4567
9.8
CVE-2026-10064
9.8
CVE-2026-4213
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-8186 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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