CVE-2022-45854

Temporary service interruption via crafted VLAN frames

Published Feb 7, 2023 · Updated Aug 3, 2024

Denial of service in Zyxel NWA110AX firmware 6.45(ABTG.0)C0 and earlier allows remote attackers on the LAN to interrupt AP service. The VLAN-frame processing path fails to check unusual conditions in crafted frames, resulting in a temporary interruption rather than persistent damage. Exploitation requires knowledge of the AP's MAC address and LAN reachability; the published impact is limited to temporary unavailability.

CVSS severity4.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Zyxel NWA110AX firmware 6.45(ABTG.0)C0 and earlier allows remote attackers on the LAN to interrupt AP service. The VLAN-frame processing path fails to check unusual conditions in crafted frames, resulting in a temporary interruption rather than persistent damage. Exploitation requires knowledge of the AP's MAC address and LAN reachability; the published impact is limited to temporary unavailability.

The record

CVE
CVE-2022-45854
Published
Feb 7, 2023
Updated
Aug 3, 2024
Vendor
Zyxel Networks
Product
NWA110AX Firmware
Classifications
CWE-754, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=< 6.50(ABTG.0)C0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Zyxel Networks · NWA110AX Firmwareversion=< 6.50(ABTG.0)C0

Published CVSS scores

4.3Zyxel CorporationCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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