What is the CVSS score of CVE-2026-28713?

CVE-2026-28713 has a CVSS 3.0 base score of 7.1 (High). CVSS vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-28713?

Within 24 hours: Identify and inventory all Acronis Virtual Appliance deployments on VMware with affected builds (Cloud Agent <36943, Cyber Protect 17 <41186); isolate systems from production networks if possible. Within 7 days: Implement mandatory credential rotation for all local privileged accounts on affected appliances and restrict network access via firewall rules to authorized administrators only. Within 30 days: Upgrade to patched builds (36943+ and 41186+) or migrate to alternative backup solutions; monitor vendor security advisories for patch availability.

Cyber Protect CVE-2026-28713

HIGH

Use of Default Credentials (CWE-1392)

2026-03-06 security@acronis.com

Information Disclosure Agent Cyber Protect Acronis

7.1

CVSS 3.0 · NVD

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Attacker accesses VMware Virtual Appliance
Exploit

Exploits default privileged credentials
Execution

Gains local system access
Impact

Executes arbitrary code with elevated privileges

Vulnerability Assessment

Weakness	CWE CWE-1392 OWASP Top 10:2025 A07:2025 - Authentication Failures ASVS 5.0 V6 - Authentication Default credential prevention
Exploitation Conditions	VMware Virtual Appliance deployment with default credentials unchanged. Affects Acronis Cyber Protect Cloud Agent (VMware) before build 36943 or Acronis Cyber Protect 17 (VMware) before build 41186. Requires user interaction to trigger exploitation chain.
Impact	CVSS 7.1 (HIGH). Attack vector: Network. Complexity: High. Privileges required: None. User interaction: Required. Exploitable via local access.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Acronis Cyber Protect and Agent virtual appliances on VMware contain hardcoded default credentials for local privileged accounts, allowing attackers with network access and user interaction to gain high-level system access and potentially modify or disrupt backup operations. The vulnerability affects Cyber Protect Cloud Agent (VMware) before build 36943 and Cyber Protect 17 (VMware) before build 41186, with no patch currently available. An attacker exploiting this could achieve privilege escalation and lateral movement within virtualized environments.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:06 CVSS 7.1

Default credentials set for local privileged user in Virtual Appliance. The following products are affected: Acronis Cyber Protect Cloud Agent (VMware) before build 36943, Acronis Cyber Protect 17 (VMware) before build 41186. [CVSS 7.1 HIGH]

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.1 HIGH

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

DescriptionCVE.org

Executive ViewAI

Why It Matters

Virtual appliance deployments of Acronis Cyber Protect Cloud Agent and Cyber Protect 17 on VMware infrastructure contain hard-coded default credentials that could allow unauthorized local privileged access. Organizations running affected versions face risk of unauthorized system administration, data exfiltration, and backup infrastructure compromise without immediate remediation.

Business Impact: High

Compensating Controls

Until patched builds are available: (1) Implement strict network segmentation to restrict access to Virtual Appliances from trusted administrative networks only; (2) Enforce strong credentials and disable default accounts via appliance management interface if configurable; (3) Deploy host-based intrusion detection on hypervisor to monitor for unauthorized administrative access; (4) Implement multi-factor authentication at network perimeter for any remote access to appliance management interfaces; (5) Establish continuous audit logging for all privileged account activities on affected appliances.

Threat Intelligence Overview

EPSS Score

0.0%

Top 87% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.0%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +36

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.