Pivotal CRM CVE-2026-51947
CRITICALSeverity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated network-reachable deserialization yields low-complexity RCE (AV:N/AC:L/PR:N/UI:N) with full code execution driving high C/I/A; scope unchanged as code runs within the service context.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
An issue in Pivotal CRM 6.6.4.08 and systems using patch-ghi-15381-cwe-502-20251225.zip (fixed in Pivotal CRM 6.6.5.10 and Patch_CWE502_20260316.zip) allows a remote attacker to execute arbitrary code via the Pivotal.Engine.Client.Services.Conversion.dll component. NOTE: this issue exists because of an incomplete fix for CVE-2026-39253.
AnalysisAI
Remote code execution in Pivotal CRM 6.6.4.08 (Aurea) arises from insecure deserialization in the Pivotal.Engine.Client.Services.Conversion.dll component, letting remote attackers run arbitrary code on the server. This is a bypass of the incomplete fix for CVE-2026-39253, and it remains exploitable on systems that only applied the earlier patch-ghi-15381-cwe-502-20251225.zip. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the Pivotal CRM Smart Client/PBS server that processes objects through Pivotal.Engine.Client.Services.Conversion.dll on version 6.6.4.08 (or a system patched only with patch-ghi-15381-cwe-502-20251225.zip). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals partially conflict and warrant judgment rather than blind trust in the 9.8 score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who can reach a network-exposed Pivotal CRM Smart Client/PBS endpoint sends a crafted serialized object to the Conversion.dll processing path; during deserialization a gadget chain executes, giving the attacker arbitrary code execution in the context of the CRM service. Because CVSS indicates AC:L/PR:N/UI:N, no authentication or user interaction is required if the endpoint is reachable. … |
| Remediation | Vendor-released patch: upgrade to Pivotal CRM 6.6.5.10, or apply Patch_CWE502_20260316.zip to 6.6.4.08 systems, per the Aurea advisory at https://support.pivotal.aurea.com/article/129552-remediating-insecure-deserialization-cwe-502-in-pivotal-6-6-04-08-smart-client-pbs. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Pivotal CRM 6.6.4.08 instances in your environment; implement network segmentation to isolate affected servers; enable comprehensive access and transaction logging. …
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Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
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External POC / Exploit Code
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