CVE-2025-14954Public exploitNetwork attack vector

UPF crash via exhausted PFCP rule pools

Published Dec 19, 2025 · Updated Dec 19, 2025

Reachable assertion in Open5GS 2.7.0 through 2.7.6 allows remote attackers to crash the UPF via crafted PFCP session requests. The PFCP handler implicitly allocates QER, FAR, URR, or PDR objects and calls fatal assertions when a per-session pool is exhausted. Access to the UPF's PFCP endpoint is enough; the abort terminates open5gs-upfd and interrupts existing user-plane sessions.

CVSS severity5.9
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reachable assertion in Open5GS 2.7.0 through 2.7.6 allows remote attackers to crash the UPF via crafted PFCP session requests. The PFCP handler implicitly allocates QER, FAR, URR, or PDR objects and calls fatal assertions when a per-session pool is exhausted. Access to the UPF's PFCP endpoint is enough; the abort terminates open5gs-upfd and interrupts existing user-plane sessions.

The record

CVE
CVE-2025-14954
Published
Dec 19, 2025
Updated
Dec 19, 2025
Vendor
Open5GS
Product
Open5GS
Classifications
CWE-617, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 19, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.7.0
  2. Affected versionversion=2.7.1
  3. Affected versionversion=2.7.2
  4. Affected versionversion=2.7.3
  5. Affected versionversion=2.7.4
  6. Affected versionversion=2.7.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open5GS · Open5GSversion=2.7.0; version=2.7.1; version=2.7.2; version=2.7.3; version=2.7.4; version=2.7.5

Published CVSS scores

5.9NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.6VulDB CNAAV:N/AC:H/Au:N/C:N/I:N/A:P
3.7VulDB CNACVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
6.3VulDB CNACVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-617Reachable Assertion
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo