CVE-2026-8233Public exploit

Session hijacking via duplicate PDR injection

Published May 10, 2026 · Updated May 10, 2026

Improper access control in Dotouch XproUPF 2.0.0-release-088aa7c4 allows remote authenticated users to hijack user-plane sessions. The UPF's PFCP session-modification handling accepts a duplicate PDR ID and selects the injected rule when its lower Precedence value outranks the legitimate PDR. Exploitation requires low-privileged adjacent-network access and can redirect, inspect, modify, drop, or blackhole victim traffic.

CVSS severity2.1
Low
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Dotouch XproUPF 2.0.0-release-088aa7c4 allows remote authenticated users to hijack user-plane sessions. The UPF's PFCP session-modification handling accepts a duplicate PDR ID and selects the injected rule when its lower Precedence value outranks the legitimate PDR. Exploitation requires low-privileged adjacent-network access and can redirect, inspect, modify, drop, or blackhole victim traffic.

The record

CVE
CVE-2026-8233
Published
May 10, 2026
Updated
May 10, 2026
Vendor
Dotouch
Product
XproUPF
Classifications
CWE-284, CWE-266, T1557
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. May 10, 2026CVE publishedPublication date reported by the CVE source.
  2. May 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=2.0.0-release-088aa7c4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Dotouch · XproUPFversion=2.0.0-release-088aa7c4

Published CVSS scores

4.6VulDB CNACVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDB CNACVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
4.0VulDB CNAAV:A/AC:H/Au:S/C:P/I:P/A:P

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.

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No observations available

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

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-266Incorrect Privilege Assignment
T1557Adversary-in-the-Middle

Public exploit references

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

Technologies

Your stack

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Your stack

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