Threats / Citrix / CVE-2023-24489
CVE-2023-24489
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Citrix Content Collaboration vulnerability
Citrix Content Collaboration contains an improper access control vulnerability allowing unauthenticated remote attackers to compromise customer-managed ShareFile storage zones controllers.
Verdict
Today item — known-exploited.
An unauthenticated attacker can exploit improper access controls in Citrix Content Collaboration to gain unauthorized access to storage infrastructure, potentially leading to data exfiltration, modification, or service disruption without requiring valid credentials.
CISA KEV Yes · 2023-08-165EPSS 0.94662 (verify live)6Exploit Weaponized · public PoC7CVSS 9.83CISA SSVC Exploitation: active · Automatable: yes · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
8 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-08-16).
Probability (EPSS)
EPSS 0.94662 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) · Affected: Citrix, Content Collaboration. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 3.1, set at disclosure.
Weakness (CWE)
Mapped to CWE-284 Improper Access Control — weakness family: Authorization / access control.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 37 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a public proof-of-concept / detection template). Catalog entries: nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I identify that the application fails to properly enforce access controls on sensitive endpoints.
Business
Attackers bypass authentication requirements entirely, eliminating the first line of defense against unauthorized access.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I send unauthenticated requests to storage zones controller interfaces to probe for and exploit the access control gap.
Business
Customer data stored in ShareFile becomes directly accessible to external threat actors without detection by normal security monitoring.
3
Lateral reach — past segmentation narrative 3
Attacker
I gain administrative or operational control over the storage infrastructure to exfiltrate, modify, or delete customer data at scale.
Business
Confidentiality, integrity, and availability of customer collaboration data are compromised, triggering breach notifications, regulatory penalties, and loss of customer trust.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05