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ZTE ZXDU68 CVE-2026-49003

| EUVDEUVD-2026-68455 CRITICAL
Improper Authentication (CWE-287)
2026-08-31 zte GHSA-3cc6-hwr4-f668
9.6
CVSS 3.1 · Vendor: zte
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain adjacent management-network access
  2. Delivery
    Reach ZXDU68 S202 management interface
  3. Exploit
    Bypass authentication
  4. Execution
    Inject OS commands as root
  5. Persist
    Delete runtime files and dump SNMP credentials
  6. Impact
    Tamper power-system parameters

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK

2 techniques across 2 tactics: Defense Evasion, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires adjacent-network access (CVSS AV:A)-the attacker must reach the device's management interface on the same or a directly connected network segment, not across the open internet. Per PR:N and the Authentication Bypass tag, no valid credentials are needed because the flaw circumvents authentication before triggering command injection; AC:L and UI:N mean no user interaction and no special timing are required. The limiting factors are therefore network position (must be on the site/management LAN reachable to ZXDU68 S202 V5.0) and having reachability to the vulnerable management service; exploitation is confined to the ZXDU68 S202 V5.0 platform.

Impact

The CVSS 3.1 vector (AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H, 9.6) indicates a low-complexity, unauthenticated attack from an adjacent network with full confidentiality/integrity/availability impact and a scope change into the wider power system-consistent with root compromise of a controller that governs other equipment. The key limiter is AV:A: the attacker must be on the same logical/adjacent network segment (e.g., the site management LAN), not the open internet, which meaningfully constrains mass exploitation. No EPSS score, KEV listing, or POC is provided, so despite the high CVSS this is not confirmed to be under active or widespread exploitation-treat it as high-severity-by-impact but currently unproven-in-the-wild. The CWE-287 vs. command-injection framing is a minor inconsistency to verify with ZTE's bulletin, but it does not lower the impact assessment.

Exploit ScenarioDerived

An attacker who gains a foothold on the telecom site's management network (e.g., via a compromised adjacent host or jump box) sends a crafted request to the ZXDU68 S202 management interface, bypassing authentication and injecting OS commands. Running as root, they delete core runtime files to paralyze monitoring and dump the SNMP and configuration credentials, then alter power-plant parameters to induce abnormal operation. No POC is published, but the low attack complexity means a knowledgeable insider or lateral attacker could reproduce it once on-segment.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 2.4% exploitation probability (EPSS)

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AnalysisAI

Command injection reachable via authentication bypass in ZTE ZXDU68 S202 V5.0, a telecom DC power supply monitoring system, lets adjacent-network attackers gain root and delete core runtime files-crashing the monitoring module-while stealing stored credentials such as SNMP community strings. Rated CVSS 9.6 with scope change, exploitation allows tampering with critical power-system parameters and can drive the entire power plant into abnormal operation. No public exploit is identified at time of analysis and it is not in CISA KEV.

RemediationAI

Consult the ZTE security bulletin (https://support.zte.com.cn/zte-iccp-isupport-webui/bulletin/detail/874505866159002595) and apply the vendor-provided firmware update for ZXDU68 S202 V5.0; the input data does not include an exact fixed version, so treat the specific patched build as 'Patch available per vendor advisory' and confirm the version with ZTE support before deployment. Because the attack vector is adjacent-network, the most effective compensating control is network isolation: place the monitoring unit on a dedicated, access-controlled management VLAN and restrict L2/L3 reachability to a small set of trusted engineering hosts (trade-off: legitimate remote monitoring tooling must be explicitly allowlisted). Additionally, disable or firewall unnecessary management services, block untrusted access to the device's web/management and SNMP ports, and rotate all SNMP community strings and device credentials after patching since they may already be exposed. Monitor for unexpected deletion or restart of the monitoring process as a detection signal.

Affected VersionsENISA

ZXDU68 S202 V5.0 ZXDU68 S202 V5.0R02M02 ACB V1.30.01.00 、ZXDU68 S202 V5.0R02M02 ACB V1.30.01.01、ZXDU68 S202 V5.0R02M02 ACB V1.30.01.02、ZXDU68 S202 V5.0R02M02 ACB V1.30.01.03

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The ZXDU68 S202 is an embedded communication/DC power supply and environment monitoring unit used in telecom sites; its management interface exposes functionality that fails to properly authenticate requests (CWE-287, Improper Authentication) and passes attacker-controlled input into system command execution (command injection). The combination means an attacker who bypasses authentication can run OS-level commands as root on the monitoring controller. Because the monitoring module governs SNMP configuration and power parameters, code execution on it directly exposes stored device secrets and control logic. Note the root-cause signals partially conflict: the assigned CWE is CWE-287 (authentication) while the description and tags emphasize command injection-both appear to chain together in this advisory.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (zte) PRIMARY 9.6 CRITICAL
AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
vuln.today AI 9.6 CRITICAL

Adjacent management-network reach (AV:A) with authentication bypass (PR:N) yields root command execution; scope change (S:C) reflects impact propagating to the controlled power system, C/I/A all High.

3.1 AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
4.0 AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (zte).

CVSS VectorVendor: zte

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Attackers can exploit command injection vulnerabilities to delete core system runtime files, causing the monitoring module to crash and become paralyzed; simultaneously, they can obtain root privileges to steal configuration passwords such as SNMP, thereby tampering with critical system parameters and triggering abnormal operation of the entire power system.

Threat Intelligence Overview

EPSS Score
2.4%
Top 17% exploitable
Prevalence
Low
niche telecom DC power supply/monitoring unit, industry-specific footprint
Social Media
3
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 2.4%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Controlled
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

50
Low Medium High Critical
KEV: 0
EPSS: +2
CVSS: +48
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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