Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-44317— free5GC: PCF npcf-policyauthorization POST /app-sessions panics on suppFeat=1 with missing AfRoutReq via nil pointer dereference

Quick assessment

Affected
free5gc free5gc
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.

free5GC是free5GC开源的一个第 5 代 (5G) 移动核心网络的开源项目。 free5GC 4.2.2之前版本存在代码问题漏洞，该漏洞源于PCF的app-sessions处理程序在特定条件下出现空指针取消引用，可能导致单个认证请求返回500错误。

CVSS 6.5 · Medium EPSS 0.58% · P46

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
free5gc free5gc < 4.2.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-44317

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
free5GC: PCF npcf-policyauthorization POST /app-sessions panics on suppFeat=1 with missing AfRoutReq via nil pointer dereference
Source: CVE Program / CVE List V5
Vulnerability Description
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's PCF POST /npcf-policyauthorization/v1/app-sessions handler panics on a single authenticated request whose ascReqData.suppFeat == "1" (enabling traffic-routing feature negotiation) and whose medComponents entries supply an afAppId but NO AfRoutReq. The create path then calls provisioningOfTrafficRoutingInfo(smPolicy, appID, routeReq, ...) with routeReq == nil and dereferences routeReq.RouteToLocs (and other fields) without a nil check, causing runtime error: invalid memory address or nil pointer dereference. Gin recovery converts the panic into HTTP 500. This vulnerability is fixed in 4.2.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
free5GC 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
free5GC是free5GC开源的一个第 5 代 (5G) 移动核心网络的开源项目。 free5GC 4.2.2之前版本存在代码问题漏洞，该漏洞源于PCF的app-sessions处理程序在特定条件下出现空指针取消引用，可能导致单个认证请求返回500错误。
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
free5gc free5gc < 4.2.2 -

II. Public POCs for CVE-2026-44317

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-44317

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-44317 (1)

Vendor Advisories for CVE-2026-44317 (1)

Other References for CVE-2026-44317 (1)

Same Patch Batch · free5gc · 2026-05-27 · 20 CVEs total

CVE-2026-44330 10.0 CRITICAL free5GC: NEF nnef-pfdmanagement API is unauthenticated; forged bearer tokens can read PFD
CVE-2026-44327 10.0 CRITICAL free5GC: NEF nnef-oam route group is unauthenticated; no-token requests reach the OAM hand
CVE-2026-44329 10.0 CRITICAL free5GC: SMF UPI management interface lacks auth middleware; unauthenticated topology read
CVE-2026-44326 9.4 CRITICAL free5GC: NEF 3gpp-traffic-influence API is unauthenticated; missing or forged bearer token
CVE-2026-44315 9.4 CRITICAL free5GC: NEF 3gpp-pfd-management API is unauthenticated; forged bearer tokens can create,
CVE-2026-42083 8.2 HIGH free5GC: PCF Npcf_SMPolicyControl missing authentication middleware allows unauthenticated
CVE-2026-44328 8.2 HIGH free5GC: SMF UPI DELETE /upi/v1/upNodesLinks/{ref} panics on AN-node deletion via nil UPF
CVE-2026-44325 7.5 HIGH free5GC: NRF POST /oauth2/token structured-form parser type-confusion panic family (Reflec
CVE-2026-44322 7.5 HIGH free5GC: NEF 3gpp-pfd-management PATCH applications/{appId} panics on UDR access failure d
CVE-2026-44321 7.5 HIGH free5GC: SMF UPI POST /upi/v1/upNodesLinks exits the SMF process on overlapping UE pools (
CVE-2026-44319 7.5 HIGH free5GC: NEF crashes via logger.Fatal on PFD notification delivery failure (attacker-contr
CVE-2026-44316 7.5 HIGH free5GC: PCF npcf-smpolicycontrol POST /sm-policies panics on downstream UDR/OpenAPI 404 v
CVE-2026-44320 7.3 HIGH free5GC: NEF nnef-callback route group is unauthenticated; forged callback requests are ac
CVE-2026-44324 6.5 MEDIUM free5GC: UDR nudr-dr DELETE amf-subscriptions panics on missing UE state via nil interface
CVE-2026-44318 6.5 MEDIUM free5GC: BSF concurrent PUT /nbsf-management/v1/subscriptions/{subId} crashes the BSF proc
CVE-2026-42081 6.1 MEDIUM free5GC: UE Security Capability bypass on NGAP PathSwitchRequest
CVE-2026-44323 4.3 MEDIUM free5GC: UDR nudr-dr DELETE amf-subscriptions panics on missing subsId when UE state exist
CVE-2026-42082 3.7 LOW free5GC: Missing Concurrent NAS SMC Validation During NGAP Handover
CVE-2026-42459 free5GC: Improper Input Validation and Generation of Error Message Containing Sensitive In

IV. Related Vulnerabilities

Same product: free5gc
Same vendor: free5gc
Same weakness: CWE-476

V. Comments for CVE-2026-44317

No comments yet

Leave a comment