Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain low-privileged local account
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DeliveryPosition to intercept SSH traffic on management segment
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ExploitExploit weak SSH algorithm during session negotiation
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ExecutionDecrypt or manipulate session data
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ImpactPartially bypass protection mechanism
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Approved algorithm selection
|
| Exploitation Conditions | Local system or network access is required (AV:L), meaning the attacker must already hold a foothold on the PowerFlex Manager host or reside on the same local network segment as the SSH management interface - remote internet-based exploitation is not possible. A low-privileged account on the target system is required (PR:L per CVSS); unauthenticated exploitation is not possible. High attack complexity (AC:H) imposes additional preconditions, likely including the ability to intercept or influence the SSH session negotiation, such as by performing a man-in-the-middle attack on a shared local segment. Exploitation is limited to PowerFlex Manager versions 4.6.2 and below across all form factors. The unchanged scope (S:U) means a successful attacker cannot directly leverage this vulnerability to pivot into other systems beyond the PowerFlex Manager itself. Confidentiality and integrity impact are both rated low, limiting the practical value of exploitation to partial data exposure or session tampering rather than full system compromise. |
| Impact | Real-world risk is low, consistent with the CVSS base score of 3.6. The local attack vector (AV:L) is the most significant constraint - exploitation requires the attacker to already have a presence on the host or local network segment, ruling out remote internet-facing exploitation. High attack complexity (AC:H) further implies specific preconditions such as the ability to observe or intercept SSH sessions or influence cipher negotiation. Low privileges (PR:L) confirm unauthenticated exploitation is not possible per the CVSS vector. Impact is limited to partial confidentiality (C:L) and integrity (I:L) with no availability disruption and unchanged scope (S:U), meaning successful exploitation cannot directly propagate beyond the PowerFlex Manager boundary. No EPSS score was provided in the source intelligence - exploitation probability is inferred from CVSS signals only and is presumed low. The vulnerability is not listed in CISA KEV and no public proof-of-concept is known, aligning this with a patch-and-harden posture rather than an emergency response priority. Organizations with strict insider threat or privileged access controls will have naturally limited exposure. |
| Exploit ScenarioDerived | A low-privileged user with a local account on a PowerFlex Manager system running version 4.6.2 or earlier positions themselves to intercept SSH session traffic on the local management network - for example, via ARP poisoning on a shared segment - and exploits the negotiated weak cryptographic algorithm to decrypt or manipulate session data, potentially bypassing integrity or confidentiality protections on SSH-based management communications. The high attack complexity (AC:H) means the attacker must successfully establish the interception position under specific timing or network conditions, making opportunistic exploitation unlikely. No public proof-of-concept exploit code is known to exist at time of analysis. |
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Alert meAnalysisAIv1 – May 22, 2026
Broken or risky cryptographic algorithm use in Dell PowerFlex Manager's SSH component (versions ≤4.6.2) allows a locally authenticated low-privileged attacker to bypass SSH protection mechanisms, affecting both Appliance and Rack form factors. The CVSS vector (AV:L/AC:H/PR:L) reflects significant exploitation barriers: physical or logical local access is required, attack complexity is high, and impact is limited to partial confidentiality and integrity loss with no availability impact. Dell has published dual advisories (DSA-2025-434 for Appliance, DSA-2025-435 for Rack); no public exploit or CISA KEV listing exists at time of analysis.
RemediationAI
Apply the security updates described in Dell's published advisories: DSA-2025-434 for the PowerFlex Appliance (https://www.dell.com/support/kbdoc/en-us/000391392/dsa-2025-434-security-update-for-dell-powerflex-appliance-multiple-third-party-component-vulnerabilities) and DSA-2025-435 for the PowerFlex Rack (https://www.dell.com/support/kbdoc/en-us/000391568/dsa-2025-435-security-update-for-dell-powerflex-rack-multiple-third-party-component-vulnerabilities). The exact patched version number is not specified in the available source data; consult Dell's support portal directly to confirm the minimum fixed release version before upgrading. As a compensating control where immediate patching is not feasible, restrict SSH access to PowerFlex Manager management interfaces to explicitly trusted administrative hosts via host-based or network-layer firewall ACLs, reducing the local attack surface available to low-privileged users. Additionally, review and harden the SSH server configuration to explicitly disable weak cipher suites, key exchange algorithms (e.g., diffie-hellman-group1-sha1), and deprecated MAC algorithms - however, consult Dell's guidance before modifying SSH configuration, as disabling algorithms may affect management tooling compatibility.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 3 packages in euvd
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Technical ContextAI · show details
CWE-327 (Use of a Broken or Risky Cryptographic Algorithm) in the SSH subsystem indicates the PowerFlex Manager server negotiates or accepts one or more deprecated cryptographic primitives - commonly legacy key exchange algorithms (e.g., diffie-hellman-group1-sha1), weak ciphers (e.g., DES, 3DES, RC4), or deprecated MAC algorithms (e.g., MD5- or SHA1-based HMACs) - that no longer meet NIST or broader industry standards. Dell PowerFlex Manager is an enterprise software-defined storage management platform. Three CPE entries are affected: the general product (cpe:2.3:a:dell:powerflex_manager:*:*:*:*:*:*:*:*), the Appliance form factor (cpe:2.3:a:dell:powerflex_manager_(appliance):*:*:*:*:*:*:*:*), and the Rack form factor (cpe:2.3:a:dell:powerflex_manager_(rack):*:*:*:*:*:*:*:*), all at versions up to and including 4.6.2. The advisory tagging as 'Authentication Bypass' suggests the weak algorithm could be leveraged to weaken session confidentiality or integrity protections established during SSH handshake.
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Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionNVD
Dell PowerFlex Manager, version(s) <=4.6.2, contain(s) a Use of a Broken or Risky Cryptographic Algorithm vulnerability in the ssh. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Protection mechanism bypass.
Threat Intelligence Overview
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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EUVD-2025-209924
GHSA-6cvj-w99f-98mh
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB