Answer in brief
CVE-2026-14818 records a High severity (CVSS 7.2) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Zyxel/ATP series firmware (generic), Zyxel/USG20(W)-VPN series firmware (generic), Zyxel/USG FLEX 50(W) series firmware (generic), Zyxel/USG FLEX series firmware (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Zyxel/ATP series firmware (generic), Zyxel/USG20(W)-VPN series firmware (generic), Zyxel/USG FLEX 50(W) series firmware (generic), Zyxel/USG FLEX series firmware (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Zyxel/ATP series firmwaregeneric | from V4.32 through V5.42 Patch 1 | Not reported |
| Zyxel/USG20(W)-VPN series firmwaregeneric | from V4.16 through V5.42 Patch 1 | Not reported |
| Zyxel/USG FLEX 50(W) series firmwaregeneric | from V4.16 through V5.42 Patch 1 | Not reported |
| Zyxel/USG FLEX series firmwaregeneric | from V4.50 through V5.42 Patch 1 | Not reported |
Published upstream
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
A path traversal vulnerability in the CLI command used to execute configuration files in Zyxel ATP series firmware versions from V4.32 through V5.42 Patch 1, USG FLEX series firmware versions from V4.50 through V5.42 Patch 1, USG FLEX 50(W) series firmware versions from V4.16 through V5.42 Patch 1, and USG20(W)-VPN series firmware versions from V4.16 through V5.42 Patch 1 could allow an authenticated attacker with administrator privileges to execute a crafted malicious configuration file on an affected device.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-14818 records a High severity (CVSS 7.2) vulnerability in CISA ADP Vulnrichment. The current sources do not mark it as known exploited. The current feed maps Zyxel/ATP series firmware (generic), Zyxel/USG20(W)-VPN series firmware (generic), Zyxel/USG FLEX 50(W) series firmware (generic), Zyxel/USG FLEX series firmware (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Zyxel/ATP series firmware (generic), Zyxel/USG20(W)-VPN series firmware (generic), Zyxel/USG FLEX 50(W) series firmware (generic), Zyxel/USG FLEX series firmware (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Zyxel/ATP series firmwaregeneric | from V4.32 through V5.42 Patch 1 | Not reported |
| Zyxel/USG20(W)-VPN series firmwaregeneric | from V4.16 through V5.42 Patch 1 | Not reported |
| Zyxel/USG FLEX 50(W) series firmwaregeneric | from V4.16 through V5.42 Patch 1 | Not reported |
| Zyxel/USG FLEX series firmwaregeneric | from V4.50 through V5.42 Patch 1 | Not reported |
Published upstream
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
A path traversal vulnerability in the CLI command used to execute configuration files in Zyxel ATP series firmware versions from V4.32 through V5.42 Patch 1, USG FLEX series firmware versions from V4.50 through V5.42 Patch 1, USG FLEX 50(W) series firmware versions from V4.16 through V5.42 Patch 1, and USG20(W)-VPN series firmware versions from V4.16 through V5.42 Patch 1 could allow an authenticated attacker with administrator privileges to execute a crafted malicious configuration file on an affected device.
Quoted source text, attributed separately from HOL analysis.