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CVE Vulnerability Details :
CVE-2026-8743
PUBLISHED
More InfoOfficial Page
Assigner-VulDB
Assigner Org ID-1af790b2-7ee1-4545-860a-a788eba489b5
View Known Exploited Vulnerability (KEV) details
Published At-17 May, 2026 | 09:00
Updated At-18 May, 2026 | 14:20
Rejected At-
▼CVE Numbering Authority (CNA)
Open5GS AMF/MME context.c ran_ue_find_by_amf_ue_ngap_id improper authorization

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 src/amf/context.c of the component AMF/MME. Performing a manipulation results in improper authorization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The patch is named 5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1. It is suggested to install a patch to address this issue.

Affected Products
Vendor
n/a
Product
Open5GS
CPEs
  • cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*
Modules
  • AMF/MME
Versions
Affected
  • 2.7.0
  • 2.7.1
  • 2.7.2
  • 2.7.3
  • 2.7.4
  • 2.7.5
  • 2.7.6
Problem Types
TypeCWE IDDescription
CWECWE-285Improper Authorization
CWECWE-266Incorrect Privilege Assignment
Type: CWE
CWE ID: CWE-285
Description: Improper Authorization
Type: CWE
CWE ID: CWE-266
Description: Incorrect Privilege Assignment
Metrics
VersionBase scoreBase severityVector
4.05.3MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.16.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.06.3MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.06.5N/A
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
Version: 4.0
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Version: 3.1
Base score: 6.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Version: 3.0
Base score: 6.3
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Version: 2.0
Base score: 6.5
Base severity: N/A
Vector:
AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Seungjoon Na (ICSR_KMU)
finder
Jinha Kim (ICSR_KMU)
reporter
Seungjoon Na (VulDB User)
analyst
Seungjoon Na (VulDB User)
Timeline
EventDate
Advisory disclosed2026-05-16 00:00:00
VulDB entry created2026-05-16 02:00:00
VulDB entry last update2026-05-17 16:11:19
Event: Advisory disclosed
Date: 2026-05-16 00:00:00
Event: VulDB entry created
Date: 2026-05-16 02:00:00
Event: VulDB entry last update
Date: 2026-05-17 16:11:19
Replaced By
Rejected Reason
References
HyperlinkResource
https://vuldb.com/vuln/364330
vdb-entry
technical-description
https://vuldb.com/vuln/364330/cti
signature
permissions-required
https://vuldb.com/submit/814559
third-party-advisory
https://github.com/open5gs/open5gs/issues/4498
exploit
issue-tracking
https://github.com/open5gs/open5gs/pull/4553
issue-tracking
patch
https://github.com/open5gs/open5gs/commit/5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1
patch
https://github.com/open5gs/open5gs/
product
Hyperlink: https://vuldb.com/vuln/364330
Resource:
vdb-entry
technical-description
Hyperlink: https://vuldb.com/vuln/364330/cti
Resource:
signature
permissions-required
Hyperlink: https://vuldb.com/submit/814559
Resource:
third-party-advisory
Hyperlink: https://github.com/open5gs/open5gs/issues/4498
Resource:
exploit
issue-tracking
Hyperlink: https://github.com/open5gs/open5gs/pull/4553
Resource:
issue-tracking
patch
Hyperlink: https://github.com/open5gs/open5gs/commit/5746b8576cfceec18ed87eb7d8cf11b1fb4cd8b1
Resource:
patch
Hyperlink: https://github.com/open5gs/open5gs/
Resource:
product
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found