CVE
Copeland XWEB EVO local root command injection in setuid Lua CGI
Affects Copeland XWEB EVO before 5.6.2, where crafted input reaching a .lua CGI endpoint can run commands as root. Fixed in 5.6.2.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 5.6.2
- Who is exposed
- Specific setups only
Do first: Check whether your setup matches what the bug needs. Product is XWEB EVO before 5.6.2. Malicious input must reach a .lua CGI endpoint handled by the setuid-root wlua interpreter.
- Last modified
- Whether it needs action now or is a reference record, by fixed rules, with why. Last checked is when cve.now last re-read it.What do these mean? →
- Reference
- Last checked
- FIRST's estimate of the chance attackers exploit it in the next 30 days, updated daily.What do these mean? →
- 0.69% · 53rd percentile
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 15/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Copeland XWEB EVO contains a command injection flaw in a setuid-root Lua CGI interpreter that lets a locally logged-in attacker with low privileges run arbitrary commands as root. The attacker must be able to reach the device locally, and no user interaction is needed.
Read the original description
XWEB EVO before 5.6.2 contains a command injection vulnerability where the setuid-root Lua CGI interpreter wlua executes system("/usr/bin/lua "+argv) on unsanitized input. Attackers can craft malicious input reached through a .lua CGI endpoint to inject arbitrary commands into the concatenated argv string, achieving command execution with root privileges. This product line reached it's end of service date in March 2026.
Who should check
Teams running Copeland XWEB EVO controllers before 5.6.2, including owners of end-of-service units
Read the source excerpt
“XWEB EVO before 5.6.2 contains a command injection vulnerability”
cve.now Index
- Exploitation0/40No signal
- Exposure5/25Specific setups only
- Reach?/20Unknown. No tracked technology or package matched
- Severity9.5/10CVSS 8.5, total technical impact per CISA
- No patch0/5No signal
What would change the score
- Would score about 65 if added to CISA KEV
- Would score about 60 if CISA's SSVC rates exploitation active
- Would score about 25 if CISA's SSVC rates it automatable
What to do
Check whether your setup matches what the bug needs.
Product is XWEB EVO before 5.6.2. Malicious input must reach a .lua CGI endpoint handled by the setuid-root wlua interpreter.Upgrade to a fixed version: 5.6.2.
Check your systems with an agent
Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.
Check whether my systems are affected by CVE-2026-124003 (Dixell/Copeland XWEB Setuid Lua CGI Root Command Injection), 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-2026-124003 (entry last updated 2026-11-13):
Affected:
- Copeland XWEB EVO: fixed in 5.6.2
Fixed versions: 5.6.2.
Conditions (all must be true for the bug to be hit):
- Product is XWEB EVO before 5.6.2. (source: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-setuid-lua-cgi-root-command-injection)
- Malicious input must reach a .lua CGI endpoint handled by the setuid-root wlua interpreter. (source: https://www.vulncheck.com/advisories/dixell-copeland-xweb-evo-setuid-lua-cgi-root-command-injection)
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-2026-124003 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-124003 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-setuid-lua-cgi-root-command-injection
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-2026-124003
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-2026-124003"}.Timeline
- CVE published
- First seen by cve.now1 day
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Copeland XWEB EVO
fixed in 5.6.2
Evidence 5
Vendor advisory · 2
Establishes: Affected and fixed versions.
- Advisory
- Patch
CVE record · 2
Establishes: The identifier and description.
- Record
- Record
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-124003
Is CVE-2026-124003 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: cve.now feed data
What does this mean?
Malicious input sent through a .lua CGI endpoint can trigger command injection. The endpoint is handled by a setuid-root interpreter, so the injected commands run with root privileges on the device.Source: vulncheck.com
Which versions are affected by CVE-2026-124003?
XWEB EVO: before 5.6.2.Source: cve.now feed data
Am I affected, and how do I check?
XWEB EVO versions before 5.6.2 are affected. To check a device, compare the XWEB EVO firmware version it reports with 5.6.2. The issue involves .lua CGI endpoints, so whether that path is reachable is part of the setup.Source: vulncheck.com
How do I fix CVE-2026-124003?
Upgrade to XWEB EVO 5.6.2, the fixed version listed for this vulnerability. The facts name no patch IDs or workaround.Source: vulncheck.com