Security readout for executives and security teams
Plain-English summary
A remotely reachable flaw in vCenter’s Syslog server may let an unauthenticated attacker escape intended directory boundaries and run arbitrary code. Successful exploitation could compromise the confidentiality, integrity, and availability of the vCenter system, potentially disrupting management of dependent virtual infrastructure.
Executive priority
Treat as an immediate validation and remediation priority because exploitation may require only network access and could yield full system impact. Direct infrastructure owners to establish exposure, restrict reachability, and follow Broadcom guidance. Do not claim compromise or active exploitation without supporting evidence.
Technical view
CVE-2026-59310 is a CWE-22 directory-traversal vulnerability in the vCenter Syslog server. Its CVSS 3.1 vector indicates network access, low complexity, no privileges, and no user interaction, with high impact across confidentiality, integrity, and availability. The supplied bundle does not identify fixed versions or technical indicators.
Likely exposure
Prioritize internet-exposed or broadly reachable vCenter systems. Review the listed vCenter 8.0, 9.0.x.x, and 9.1.x.x families, plus listed VMware foundation and telco products. Because the bundle’s version-status representation is ambiguous, confirm actual affected builds against Broadcom’s advisory before declaring exposure.
Exploitation context
The source states that an attacker with network access to vCenter may achieve arbitrary code execution. The CVSS vector indicates no authentication or user interaction. The CVE is not marked as CISA KEV in the supplied bundle, and no cited source here establishes active exploitation or public exploit availability.
Researcher notes
The available evidence identifies the vulnerable component and impact but provides no root-cause detail, indicators, fixed builds, or documented exploitation. Product-family entries include ambiguous default-status data; use the Broadcom advisory as the authority for build-level applicability. Avoid inferring that every named version is vulnerable.
Mitigation direction
- Check Broadcom’s advisory for confirmed affected builds, patches, workarounds, and product-specific instructions.
- Apply only Broadcom-recommended updates or mitigations after appropriate change testing.
- Restrict vCenter and Syslog service access to trusted administrative networks and required systems.
- Reduce unnecessary external or cross-segment reachability while remediation is pending.
- Escalate compensating controls if an affected system cannot be promptly updated.
Validation and detection
- Inventory vCenter, Cloud Foundation, vSphere Foundation, and listed telco product versions and builds.
- Compare every discovered build with Broadcom’s affected and fixed-version tables.
- Test whether vCenter’s Syslog service is reachable from untrusted or unnecessary network segments.
- Confirm deployed remediation levels against vendor guidance after maintenance.
- Review relevant telemetry for unexplained Syslog-related file access, process creation, or service behavior.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-59310 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9vmwareVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.