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PatchSiren cyber security CVE debrief

CVE-2023-24489 Citrix CVE debrief

CVE-2023-24489 is a Citrix Content Collaboration / ShareFile improper access control vulnerability that CISA added to the Known Exploited Vulnerabilities catalog on 2023-08-16. Because it is in KEV, organizations should treat it as urgent and follow Citrix mitigation guidance immediately. If mitigation is not available in your environment, CISA’s guidance is to discontinue use of the product.

Vendor
Citrix
Product
Content Collaboration
CVSS
CRITICAL 9.8
CISA KEV
Listed
Original CVE published
2023-08-16
Original CVE updated
2023-08-16
Advisory published
2023-08-16
Advisory updated
2023-08-16

Who should care

Administrators and security teams responsible for Citrix Content Collaboration / ShareFile deployments, especially vulnerability management, endpoint/security operations, and teams tracking exposed internet-facing services.

Technical summary

The supplied record identifies an improper access control issue in Citrix Content Collaboration ShareFile. The source corpus does not provide exploit mechanics, authentication bypass details, or impact scoring, but the KEV designation confirms active real-world exploitation risk significant enough to warrant immediate remediation.

Defensive priority

High. CISA listed this CVE in the Known Exploited Vulnerabilities catalog, which is a strong signal to prioritize patching or mitigation ahead of routine maintenance.

Recommended defensive actions

  • Apply Citrix vendor mitigations immediately, following the official support guidance referenced by CISA.
  • If mitigations are unavailable in your environment, CISA advises discontinuing use of the product.
  • Verify which ShareFile / Content Collaboration instances are deployed and whether any are exposed to untrusted networks.
  • Confirm remediation status across all environments, including test, staging, and production.
  • Track the CISA KEV due date and complete remediation before or as soon as possible after 2023-09-06.
  • Monitor Citrix and CISA updates for any additional guidance or follow-on advisories.

Evidence notes

CISA’s KEV record for this CVE was published on 2023-08-16 and includes the required action: “Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.” The supplied corpus does not include a CVSS score or vendor advisory text, so this debrief avoids unsupported severity or exploit-detail claims.

Sources and references

Verified primary and authoritative sources

  • CVE-2023-24489 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2023-24489

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

  • CVE-2023-24489 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2023-24489

    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.