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PowerProtect Cyber Recovery CVE-2026-79938

| EUVDEUVD-2026-66707 HIGH
Improper Authentication (CWE-287)
2026-08-26 security_alert@emc.com GHSA-qgvx-j2fm-gpj6
7.6
CVSS 3.1 · Vendor: emc
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Severity by source

Vendor (emc) PRIMARY
7.6 HIGH
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
vuln.today AI
7.6 HIGH

Network-accessible with low complexity; PR:L reflects the required low-privilege account; high integrity impact reflects backup data manipulation potential.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (emc).

CVSS VectorVendor: emc

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low

Lifecycle Timeline

3
Patch available
Aug 26, 2026 - 22:03 EUVD
Analysis Generated
Aug 26, 2026 - 20:36 vuln.today
CVE Published
Aug 26, 2026 - 20:18 cve.org
HIGH 7.6

DescriptionCVE.org

Dell PowerProtect Cyber Recovery, versions prior to 20.3, contain an Improper Authentication vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

AnalysisAI

Unauthorized access via authentication bypass in Dell PowerProtect Cyber Recovery versions prior to 20.3 allows a remote attacker holding a low-privilege account to exceed their authorized scope through improper authentication controls. The CVSS vector assigns high integrity impact (I:H), indicating attackers could tamper with or corrupt backup data and recovery configurations - a particularly severe outcome for a platform whose primary purpose is ransomware resilience. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain low-privilege account credentials
Delivery
Connect to management interface over network
Exploit
Send crafted authentication requests
Execution
Bypass access control checks
Persist
Access protected backup management functions
Impact
Modify or delete backup vault data

Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to possess a valid low-privilege account on the Dell PowerProtect Cyber Recovery system, as indicated by PR:L in the CVSS vector - unauthenticated remote exploitation is not supported. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.6 High score is driven by the combination of network reachability (AV:N), low attack complexity (AC:L), and high integrity impact (I:H), partially offset by the PR:L requirement meaning the attacker needs an existing low-privilege account. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained low-privilege credentials to a Dell PowerProtect Cyber Recovery deployment - through phishing, credential stuffing, or insider access - sends crafted authentication requests to the management interface over the network. By exploiting the improper authentication flaw, the attacker bypasses access controls enforced by privilege boundaries to reach protected backup management functions. …
Remediation Upgrade Dell PowerProtect Cyber Recovery to version 20.3 or later per Dell Security Advisory DSA-2026-370 (https://www.dell.com/support/kbdoc/en-us/000501456/dsa-2026-370-security-update-for-dell-powerprotect-cyber-recovery-multiple-third-party-component-vulnerabilities). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Audit all user accounts with access to Dell PowerProtect Cyber Recovery versions prior to 20.3; identify and document all low-privilege accounts and their access patterns; implement network segmentation to restrict platform access to trusted networks only. …

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CVE-2026-79938 vulnerability details – vuln.today

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