Yes. CISA added CVE-2024-38813 to its Known Exploited Vulnerabilities catalogue on 20 November 2024, which it does only when there is reliable evidence of active exploitation. CISA has not linked it to known ransomware campaigns. VMware vCenter contains an improper check for dropped privileges vulnerability. Any organisation running the affected product should treat remediation as urgent.
What CISA’s KEV listing means for this CVE
CISA placing CVE-2024-38813 in the Known Exploited Vulnerabilities catalogue means this is not just a theoretical flaw. For defenders, the practical question is whether the affected vCenter Server instance is exposed, because confirmed exploitation turns triage into an incident-response priority rather than a routine patch item. Use the CISA KEV listing and vendor advisory together to verify scope, exposure and required remediation timing.
The right first step is to confirm whether the product is internet reachable, whether the vulnerable management interface is restricted, and whether any compensating controls were in place before the KEV listing. A system that is already externally accessible deserves faster action than one isolated behind strong administrative controls, but both still require remediation planning.
For a broader playbook on how to prioritise actively exploited flaws, see Zero-Day and Exploited Vulnerabilities Guide, which covers KEV-driven triage, emergency mitigation and post-patch hunting.
How to respond when patching cannot happen immediately
When a security update cannot be applied right away, the goal is to shrink exposure quickly without pretending the risk is gone. That usually means reducing access to the management plane, removing unnecessary network reachability, tightening administrative controls and reviewing whether any temporary mitigation materially lowers exploitability. For this kind of issue, delay should be treated as a bounded exception, not an open-ended state.
Remediation teams should also coordinate around operational impact. vCenter is often a control plane, so a rushed change without maintenance planning can create service disruption. Still, because exploitation is known to be underway, the acceptable delay window should be short and explicitly owned. For practical prioritisation and exception handling, the Vulnerability Management Guide is useful for mapping this kind of urgent fix into an asset-scoped remediation workflow.
Once the fix path is clear, validate that the management interface is no longer exposed in ways that let an attacker reach the vulnerable code path. If patching is deferred even briefly, document the compensating control, the exception owner and the deadline for closure.
What to check for signs of earlier compromise
Because this CVE is confirmed as exploited in the wild, response should include checking whether the system may already have been touched before remediation. Focus on authentication anomalies, unexpected administrative actions, unusual changes to accounts or roles, and any suspicious activity originating from the vCenter management plane. The question is not only whether the flaw exists, but whether it was used before you could close it.
Review surrounding telemetry as well. If logs are available, look for odd access timing, new sessions from unfamiliar sources, configuration changes outside change windows, and signs that the management interface was used to pivot deeper into the environment. For defenders, the highest-value evidence is anything that shows whether privilege was actually escalated, not just whether a scan reported the CVE.
For compromise assessment after active exploitation, the Ultimate Guide to NHIs, Key Challenges and Risks is helpful where service and infrastructure access paths may also need review, and MITRE ATT&CK Enterprise Matrix is useful for mapping likely credential access and privilege-escalation behaviours during investigation.
Risk and Threat Considerations
Once a flaw is in KEV, the main risk shifts from vulnerability existence to exploitation probability. Privilege-escalation flaws in management software are attractive because they can convert limited access into control of a high-value administrative plane, which can in turn expose credentials, configuration, virtual infrastructure and downstream systems.
Failure mechanism: An attacker exploits the improper privilege check to obtain higher privileges than intended, then uses that access to alter configuration, harvest secrets or move laterally through the environment.
Impact: The result can be full administrative compromise of the management layer, loss of trust in surrounding systems and a broader incident that outlives the original vulnerability itself.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
MITRE ATT&CK addresses the attack surface, NIST CSF 2.0, NIST SP 800-53 Rev 5 and CIS Controls v8 set the technical controls, and ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | DE.CM-01 — Networks and network services are monitored to find potential cybersecurity events | Active exploitation makes monitoring the management plane materially important. |
| Recommendation — Increase monitoring on vCenter access paths and alert on anomalous administrative activity. | ||
| NIST SP 800-53 Rev 5 | SI-2 — Flaw Remediation | The question is about urgent remediation of an exploited software flaw. |
| Recommendation — Prioritise remediation of the affected vCenter flaw and track closure to completion. | ||
| MITRE ATT&CK | T1068 — Exploitation for Privilege Escalation | The CVE is a privilege-escalation issue with confirmed exploitation. |
| Recommendation — Map suspicious activity to privilege-escalation patterns and hunt for follow-on abuse. | ||
| CIS Controls v8 | CIS-7 — Continuous Vulnerability Management | Active exploitation requires prioritised vulnerability handling and verification. |
| Recommendation — Triage the KEV-listed flaw immediately and verify remediation across all exposed assets. | ||
| ISO/IEC 27001:2022 | A.8.8 — Management of technical vulnerabilities | This CVE demands vulnerability management and rapid corrective action. |
| Recommendation — Apply vulnerability management procedures to accelerate assessment, remediation and verification. | ||
Practitioner Guidance
What to prioritise: Treat KEV-listed management-plane flaws as exposure-reduction problems first, not just patch tickets. If the vulnerable system is reachable from untrusted networks or supports high-value administrative functions, accelerate remediation and assume the blast radius is larger than the CVE title suggests.
What to verify: Confirm whether the instance is internet exposed, whether administrative access is tightly segmented, and whether logs can support a credible pre-patch compromise review. If you cannot answer those questions quickly, the environment is not yet well enough controlled for comfort.
Decision rule: If patching must wait, the exception should include explicit compensating controls, a named owner and a short expiry date. If you cannot define all three, the delay is not operationally justified.
Practitioner takeaway: For a KEV-listed privilege-escalation flaw, the right posture is urgent containment plus verification of prior abuse, because exploitation may have happened before the patch window even opened.
Related resources from NHI Mgmt Group
- How do you patch or mitigate CVE-2024-38813 (VMware vCenter Server Privilege Escalation)?
- CVE-2024-38813 (VMware vCenter Server Privilege Escalation)
- Is CVE-2024-37079 (Broadcom VMware vCenter Server Out-of-bounds Write) being exploited in the wild?
- Is CVE-2024-21410 (Microsoft Exchange Server Privilege Escalation) being exploited in the wild?