Vulnerability-Lookup

GHSA-9GQR-6728-FPV3

Vulnerability from github – Published: 2025-06-26 21:31 – Updated: 2025-10-22 00:33

Details

Memory 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

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.2 (Critical)


                  
                    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-6543"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-25T13:15:27Z",
    "severity": "CRITICAL"
  },
  "details": "Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when\u00a0configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server",
  "id": "GHSA-9gqr-6728-fpv3",
  "modified": "2025-10-22T00:33:18Z",
  "published": "2025-06-26T21:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6543"
    },
    {
      "type": "WEB",
      "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6543"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-6543 (GCVE-0-2025-6543)

Vulnerability from cvelistv5 – Published: 2025-06-25 12:49 – Updated: 2026-02-26 17:50

Title

Memory overflow vulnerability leading to unintended control flow and Denial of Service

Summary

Severity

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

Citrix

References

2 references

URL	Tags
https://support.citrix.com/support-home/kbsearch/…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

2 products

Vendor	Product	Version
NetScaler	ADC	Affected: 14.1 , < 47.46 (patch) Affected: 13.1 , < 59.19 (patch) Affected: 13.1 FIPS and NDcPP , < 37.236 (patch)
NetScaler	Gateway	Affected: 14.1 , < 47.46 (patch) Affected: 13.1 , < 59.19 (patch) Affected: 13.1 FIPS and NDcPP , < 37.236 (patch)

Date Public

2025-06-25 12:30

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-9GQR-6728-FPV3

CVE-2025-6543 (GCVE-0-2025-6543)

Tags

Sightings

Nomenclature