CVE-2026-59309 (GCVE-0-2026-59309)
Vulnerability from cvelistv5 – Published: 2026-07-30 12:19 – Updated: 2026-07-30 12:27
VLAI
EPSS
VEX
Title
vCenter authentication-bypass vulnerability
Summary
VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service. A malicious actor with network access to vCenter may exploit this issue to bypass authentication and gain unauthorized access to the system.
Severity
9.8 (Critical)
CWE
- CWE-303 - Incorrect implementation of authentication algorithm
Assigner
References
1 reference
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| VMware | Cloud Foundation |
Affected:
9.1.x.x
Affected: 9.0.x.x Affected: 5.x |
|
| VMware | vSphere Foundation |
Affected:
9.1.x.x
Affected: 9.0.x.x |
|
| VMware | vCenter |
Affected:
9.1.x.x , < 9.1.0.0300
(custom)
Affected: 9.0.x.x , < 9.0.2.0100 (custom) Affected: 8.0 , < 8.0 U3k (custom) |
|
| VMware | Telco Cloud Infrastructure |
Affected:
3.0
|
|
| VMware | Telco Cloud Platform |
Affected:
5.1.x
Affected: 5.0.x Affected: 4.x Affected: 3.0 |
Date Public
2026-07-29 04:54
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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