Answer in brief
CVE-2025-6543 records a High severity vulnerability in Memory overflow vulnerability leading to unintended control flow and Denial of Service. The current sources mark it as known exploited. The current feed maps NetScaler/ADC (generic), NetScaler/Gateway (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. 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 NetScaler/ADC (generic), NetScaler/Gateway (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| NetScaler/ADCgeneric | >=14.1 <47.46 || >=13.1 <59.19 || >=13.1 FIPS and NDcPP <37.236 | 47.46, 59.19, 37.236 |
| NetScaler/Gatewaygeneric | >=14.1 <47.46 || >=13.1 <59.19 || >=13.1 FIPS and NDcPP <37.236 | 47.46, 59.19, 37.236 |
Published upstream
Jun 25, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Feb 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Jun 30, 2025
Evidence: source:kev:kev:kev:recordMemory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-6543 records a High severity vulnerability in Memory overflow vulnerability leading to unintended control flow and Denial of Service. The current sources mark it as known exploited. The current feed maps NetScaler/ADC (generic), NetScaler/Gateway (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. 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 NetScaler/ADC (generic), NetScaler/Gateway (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| NetScaler/ADCgeneric | >=14.1 <47.46 || >=13.1 <59.19 || >=13.1 FIPS and NDcPP <37.236 | 47.46, 59.19, 37.236 |
| NetScaler/Gatewaygeneric | >=14.1 <47.46 || >=13.1 <59.19 || >=13.1 FIPS and NDcPP <37.236 | 47.46, 59.19, 37.236 |
Published upstream
Jun 25, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Feb 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Jun 30, 2025
Evidence: source:kev:kev:kev:recordMemory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
Quoted source text, attributed separately from HOL analysis.