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PatchSiren cyber security CVE debrief

CVE-2025-7775 Citrix CVE debrief

CVE-2025-7775 is a Citrix NetScaler memory overflow vulnerability that CISA added to the Known Exploited Vulnerabilities catalog on 2025-08-26. Because it is listed in KEV, defenders should treat remediation as urgent and follow vendor guidance immediately.

Vendor
Citrix
Product
NetScaler
CVSS
CRITICAL 9.2
CISA KEV
Listed
Original CVE published
2025-08-26
Original CVE updated
2025-08-26
Advisory published
2025-08-26
Advisory updated
2025-08-26

Who should care

Organizations running Citrix NetScaler, along with teams responsible for edge appliance patching, vulnerability management, and incident response.

Technical summary

The available official corpus identifies the issue as a memory overflow in Citrix NetScaler. CISA’s KEV listing indicates known exploitation risk significant enough to require prompt mitigation, but the supplied sources do not include CVSS metrics or deeper technical details.

Defensive priority

Urgent

Recommended defensive actions

  • Apply mitigations per Citrix’s vendor instructions as soon as possible.
  • Use the CISA KEV due date (2025-08-28) as the remediation deadline for affected systems.
  • If vendor mitigations are unavailable or cannot be applied, follow the CISA guidance to discontinue use of the product where appropriate.
  • Validate exposure across all Citrix NetScaler deployments and confirm remediation status after action is taken.

Evidence notes

This debrief is based only on the supplied official sources: the CISA KEV entry, the CVE record, and the NVD reference link. The corpus provides the vulnerability name, product, KEV status, publication date, and due date, but no CVSS score or additional exploit details.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-7775 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-7775

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-7775 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-7775

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.