CVE-2026-1521

MEDIUM EPSS 39.7%
Published Jan 28, 20265mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 4.0
Medium
Find Similar
Published Jan 28, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

Description

A security flaw has been discovered in Open5GS up to 2.7.6. This affects the function sgwc_s5c_handle_bearer_resource_failure_indication of the file src/sgwc/s5c-handler.c of the component SGWC. Performing a manipulation results in denial of service. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The patch is named 69b53add90a9479d7960b822fc60601d659c328b. It is recommended to apply a patch to fix this issue.

CVSS Details

Base Score
5.5
Exploitability
—
Impact
—
Vector string
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
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
39.7% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-404

Affected Products 1

VendorProductVersionRange
open5gsopen5gs* ≤2.7.6

References 8

  • github.com https://github.com/open5gs/open5gs/
  • github.com https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b
    Patch
  • github.com https://github.com/open5gs/open5gs/issues/4268
    ExploitIssue TrackingVendor Advisory
  • github.com https://github.com/open5gs/open5gs/issues/4268#event-21989483261
    ExploitIssue TrackingVendor Advisory
  • github.com https://github.com/open5gs/open5gs/issues/4268#issue-3795012861
    ExploitIssue TrackingVendor Advisory
  • vuldb.com https://vuldb.com/?ctiid.343192
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.343192
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.738370
    ExploitThird Party AdvisoryVDB Entry

Remediation

  • github.com https://github.com/open5gs/open5gs/commit/69b53add90a9479d7960b822fc60601d659c328b
    Patch