CVE-2026-59310 — Broadcom VMware vCenter Path Traversal Vulnerability
VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- Confirmed exploitation (CISA KEV)+35
- Used in ransomware campaigns (CISA)+10
- Public exploit/PoC (github)+6
- EPSS 2.6% (30-day exploitation probability)+13
- Technical severity (critical)+10
- Automatable exploitation (SSVC)+3
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.
CISA required action CISA
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
US federal deadline: Aug 21, 2026 — passed 55 day(s) ago
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Vmware Cloud Foundation, Vmware Telco Cloud Infrastructure, Vmware Telco Cloud Platform…).
- Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
- The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
- No fix documented in the sources: reduce exposure and monitor the vendor advisory.
- Search available logs for exploit probes matching the vulnerability class (file handling), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Vmware | Cloud Foundation | version 9.0.x.xversion 5.xversion 9.1.x.x | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Vmware | Telco Cloud Infrastructure | version 3.0 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Vmware | Telco Cloud Platform | version 3.0version 4.xversion 5.0.xversion 5.1.x | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Vmware | vCenter | ≥ 8.0 and < 8.0 U3k≥ 9.0.x.x and < 9.0.2.0100≥ 9.1.x.x and < 9.1.0.0300 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Vmware | Vcenter Server |
version 8.0-update3e< 8.0version 8.0version 8.0-aversion 8.0-bversion 8.0-c≥ 9.1 and < 9.1.0.0300≥ 9.0 and < 9.0.2.0100 and 21 moreversion 8.0-update3jversion 8.0-update3iversion 8.0-update3hversion 8.0-update3gversion 8.0-update1version 8.0-update3cversion 8.0-update1aversion 8.0-update1bversion 8.0-update1cversion 8.0-update1dversion 8.0-update1eversion 8.0-update2version 8.0-update2aversion 8.0-update2bversion 8.0-update2cversion 8.0-update2dversion 8.0-update2eversion 8.0-update3version 8.0-update3aversion 8.0-update3bversion 8.0-update3d |
Vulnerable | NIST National Vulnerability Database |
| Vmware | vSphere Foundation | version 9.0.x.xversion 9.1.x.x | Vulnerable | CVE Program (cve.org) e CISA ADP |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 9.8 | CVSS 3.1 | Critical | 3.9 | 5.9 | security@vmware.com via NIST National Vulnerability Database |
| 9.8 | CVSS 3.1 | Critical | — | — | GitHub, Inc. via GitHub Security Advisories |
| 9.8 | CVSS 3.1 | Critical | — | — | vmware via CVE Program (cve.org) e CISA ADP |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: security@vmware.com) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
CISA KEV details CISA
CISA lists a CVE once it has evidence of exploitation against real targets.
CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.
Public exploits, PoCs and detection templates
Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.
- CVE-2026-59310-POC 仅用于自测,请勿用于攻击 ★ 6 Sep 25, 2026
- CVE-2026-59310 PoC ★ 2 Aug 17, 2026
- VC-Strike — VMware vCenter CVE-2026-59310 (unauth root RCE) & CVE-2026-59309 (SRP auth bypass) authorized pentest suite. GUI+CLI, multi-session C2, stdlib-only. 授权测试专用 ★ 2 Oct 1, 2026
- CVE-2026-59310 ★ 0 Aug 17, 2026
- ChinaRan0/CVE-2026-59310-POC 的优化版本。子命令、一次性 cron、带远端 PTY 的交互 shell。仅限授权测试。 ★ 0 Sep 29, 2026
Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.
EPSS over time FIRST
Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 2.57%
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
- Monitor file creation in web directories and paths with traversal sequences (../).
- Hunt retroactively in logs from before Aug 18, 2026 (KEV listing): exploitation may have started earlier.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · vmware/cloud foundation, vmware/vsphere foundation, vmware/vcenter, vmware/telco cloud infrastructure, vmware/telco clou
- SSVC assessment updated
- Record published
- Affected products added · vmware/vcenter server
- CVSS changed · 9.8
- Source status changed · → Analyzed
- Added to CISA KEV (detected)
- Record created in this database
- Added to CISA KEV catalog
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 2× References added · Oct 13, 2026 – Oct 13, 2026
- 1× Official description updated · Oct 13, 2026 – Oct 13, 2026
References
6 on the record
- support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvis
- www.cisa.gov/known-exploited-vulnerabilities-catalog
- medium.com/@quirso_de/active-exploitation-of-cve-2026-59310-361-victim-ips-acros
- medium.com/@quirso_de/global-exploitation-of-cve-2026-59310-by-suspected-chinese
- nvd.nist.gov/vuln/detail/CVE-2026-59310
- github.com/advisories/GHSA-v2gp-49gj-2c9f
Elsewhere on this site
Related CVEs (same products)
- Medium CVE-2026-41722 VMSA-2026-0004: VMware Cloud Foundation Operations updates address multiple vulnerabilities (CVE-2026-41722, CVE-2026-41723 and CVE-2026-41724) Jun 8, 2026
- Medium CVE-2026-41724 VMSA-2026-0004: VMware Cloud Foundation Operations updates address multiple vulnerabilities (CVE-2026-41722, CVE-2026-41723 and CVE-2026-41724) Jun 8, 2026
- High CVE-2026-41723 VMSA-2026-0004: VMware Cloud Foundation Operations updates address multiple vulnerabilities (CVE-2026-41722, CVE-2026-41723 and CVE-2026-41724) Jun 8, 2026
- High CVE-2026-22721 VMware Aria Operations privilege escalation vulnerability Feb 25, 2026
- Critical CVE-2026-22720 VMware Aria Operations stored cross-site scripting vulnerability Feb 25, 2026
- High CVE-2026-22719 Broadcom VMware Aria Operations Command Injection Vulnerability KEV Feb 25, 2026
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No fixed version, patch or mitigation documented.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-59310 is "Broadcom VMware vCenter Path Traversal Vulnerability", rated Critical. It affects Cloud Foundation (Vmware); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 9.8 describes technical severity. EPSS 2.57% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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