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CVE-2026-90707— Open5GS Old AMF Discovery Fallback nnrf-handler.c amf_nnrf_try_old_amf_discovery_fallback use after free

Quick assessment

Affected
n/a Open5GS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Open5GS（版本 2.7.x 及更早版本）中发现了一个安全漏洞。受影响的函数是文件 src/amf/nnrf-handler.c 中的 amf_nnrf_try_old_amf_discovery_fallback，该函数属于 Old AMF Discovery Fallback 组件。该漏洞由对参数 discovery_option 的操纵引发，导致“释放后使用”（Use-After-Free）错误。攻击者可能通过远程方式发起攻击。已识别出对应的补丁标识为 ddd683a35f8aaac2b7b9884a24

CVSS 8.3 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-90707

Vulnerability Information
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Vulnerability Title
Open5GS Old AMF Discovery Fallback nnrf-handler.c amf_nnrf_try_old_amf_discovery_fallback use after free
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Open5GS up to 2.7.x. Affected is the function amf_nnrf_try_old_amf_discovery_fallback of the file src/amf/nnrf-handler.c of the component Old AMF Discovery Fallback. The manipulation of the argument discovery_option results in use after free. The attack may be performed from remote. The patch is identified as ddd683a35f8aaac2b7b9884a24cd53bddfc65238. Applying a patch is advised to resolve this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Open5GS 2.0 cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90707

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III. Intelligence Information for CVE-2026-90707

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Patches & Fixes for CVE-2026-90707 (2)

Same Patch Batch · n/a · 2026-09-14 · 12 CVEs total

CVE-2026-90687 6.3 MEDIUM GPAC MP4Box base_scenegraph.c gf_node_changed_internal use after free
CVE-2026-90698 5.3 MEDIUM memcached mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds
CVE-2026-90686 5.3 MEDIUM GPAC MP4Box loader_bt.c gf_bt_report memory corruption
CVE-2026-90683 3.3 LOW GPAC MP4Box base_scenegraph.c gf_node_unregister assertion
CVE-2026-90613 3.3 LOW GPAC MP4Box stbl_read.c stbl_GetSampleInfos assertion
CVE-2026-90612 3.3 LOW GPAC MP4Box scene_dump.c gf_sm_dump_command_list assertion
CVE-2026-90611 3.3 LOW GPAC MP4Box loader_xmt.c xmt_parse_element assertion
CVE-2026-90610 3.3 LOW GPAC MP4Box svg_attributes.c gf_svg_attributes_copy buffer over-read
CVE-2026-90609 3.3 LOW GPAC MP4Box vrml_tools.c null pointer dereference
CVE-2026-90685 2.8 LOW GPAC MP4Box lsr_dec.c lsr_exec_command_list assertion
CVE-2026-90684 2.8 LOW GPAC MP4Box base_scenegraph.c gf_node_get_field_count assertion

IV. Related Vulnerabilities

Same product: Open5GS
Same vendor: n/a
Same weakness: CWE-416

V. Comments for CVE-2026-90707

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