October 29, 2026

CVE Watchtower

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CVE-2026-74232NVD

Vulnerability Summary

Zbtlink L3_V2_8 firmware 3.0.0.4.528, Zbtlink WE826-T2 firmware 19.1101, Zbtlink ZBT-7628 firmware 1.0.0.2.007, Zbtlink ZBT-ZBT7621 firmware 1.0.0.3.001, MoreQuick MQAC-7620, MQAC-7620A, MQAP-7620, MQAP-7620A, and MQAP-7628 firmware 1.0.0.2.000, AP522 firmware 1.0.0.2.014, AP7628 and HC5661A firmware 3.0.0.4.380, APG721B firmware 19.0809, HK300 firmware 1.0.0.2.032, and MAP-N10 firmware 1.0.0.2.044 ship a backdoor command-and-control implant (yunmgrd) reachable over an unauthenticated cleartext UDP channel to a hardcoded C2 server. A remote unauthenticated attacker on the network path can hijack the channel and execute arbitrary commands as root. The attacker can also modify DNS entries, exfiltrate PPPoE credentials, and open reverse SSH tunnels.
Severity Level
CRITICAL(9.8)
Published Date
Aug 27, 2026
Last Modified
Aug 27, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.81%Probability
Root Weakness (CWE)
CWE-506: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CWE-300: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Zbtlink L3_V2_8 >= 3.0.0.4.528
  • Zbtlink WE826-T2 >= 19.1101
  • Zbtlink ZBT-7628 >= 1.0.0.2.007
  • Zbtlink ZBT-ZBT7621 >= 1.0.0.3.001
  • MoreQuick MQAC-7620 >= 1.0.0.2.000
  • MoreQuick MQAC-7620A >= 1.0.0.2.000
  • MoreQuick MQAP-7620 >= 1.0.0.2.000
  • MoreQuick MQAP-7620A >= 1.0.0.2.000
  • MoreQuick MQAP-7628 >= 1.0.0.2.000
  • Unknown AP522 >= 1.0.0.2.014
  • Unknown AP7628 >= 3.0.0.4.380
  • Unknown APG721B >= 19.0809
  • Unknown HC5661A >= 3.0.0.4.380
  • Unknown HK300 >= 1.0.0.2.032
  • Unknown MAP-N10 >= 1.0.0.2.044
Patched Versions
Not provided by cveorg for this CVE.
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🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
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External References