CVE-2026-1522— Open5GS SGWC s5c-handler.c sgwc_s5c_handle_modify_bearer_response denial of service
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I. Basic Information for CVE-2026-1522
Vulnerability Information
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Vulnerability Title
Open5GS SGWC s5c-handler.c sgwc_s5c_handle_modify_bearer_response denial of service
Source: NVD (National Vulnerability Database)
Vulnerability Description
A weakness has been identified in Open5GS up to 2.7.6. This vulnerability affects the function sgwc_s5c_handle_modify_bearer_response of the file src/sgwc/s5c-handler.c of the component SGWC. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. This patch is called b19cf6a. Applying a patch is advised to resolve this issue. The issue report is flagged as already-fixed.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不恰当的资源关闭或释放
Source: NVD (National Vulnerability Database)
Vulnerability Title
Open5GS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Open5GS是Open5GS开源的一个 5G Core 和 Epc 的 C 语言开源实现，即 Lte/Nr 网络的核心网络。 Open5GS 2.7.6及之前版本存在安全漏洞，该漏洞源于对文件src/sgwc/s5c-handler.c中sgwc_s5c_handle_modify_bearer_response函数的错误操作，可能导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | Open5GS | 2.7.0 | cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-1522
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Submit #738371: Open5GS SGWC v2.7.6 Denial of Servicethird-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-1522
Same Patch Batch · n/a · 2026-01-28 · 26 CVEs total
| CVE-2026-1521 | 5.3 MEDIUM | Open5GS SGWC s5c-handler.c denial of service |
| CVE-2026-1520 | 2.4 LOW | rethinkdb Secondary Index cross site scripting |
| CVE-2025-71007 | Oneflow 安全漏洞 | |
| CVE-2025-71004 | Oneflow 安全漏洞 | |
| CVE-2025-71006 | Oneflow 安全漏洞 | |
| CVE-2025-71003 | Oneflow 安全漏洞 | |
| CVE-2025-71005 | Oneflow 安全漏洞 | |
| CVE-2025-71002 | Oneflow 安全漏洞 | |
| CVE-2025-69602 | AltumCode 66biolinks 安全漏洞 | |
| CVE-2025-69601 | AltumCode 66biolinks 安全漏洞 | |
| CVE-2025-71001 | Oneflow 安全漏洞 | |
| CVE-2022-40620 | NETGEAR多款产品 安全漏洞 | |
| CVE-2022-40619 | NETGEAR多款产品 安全漏洞 | |
| CVE-2025-65891 | Oneflow 安全漏洞 | |
| CVE-2025-65889 | Oneflow 安全漏洞 | |
| CVE-2025-65890 | Oneflow 安全漏洞 | |
| CVE-2025-70999 | Oneflow 安全漏洞 | |
| CVE-2025-71000 | Oneflow 安全漏洞 | |
| CVE-2025-65887 | Oneflow 安全漏洞 | |
| CVE-2025-65886 | Oneflow 安全漏洞 |
Showing top 20 of 26 CVEs. View all on vendor page → →
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Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
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Same weakness: CWE-404
- CVE-2026-8270
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Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service - CVE-2026-8267
Open5GS SMF smf_nsmf_handle_created_data_in_vsmf denial of s - CVE-2026-8266
Open5GS SMF gsm-build.c gsm_build_pdu_session_establishment_
V. Comments for CVE-2026-1522
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