CVE-2022-46487 — Improper initialization of x87 and SSE floating-point configuration registers in

Improper initialization of x87 and SSE floating-point configuration registers in the __scone_entry component of SCONE before 5.8.0 for Intel SGX allows a local attacker to compromise the execution integrity of floating-point operations in an enclave or access sensitive informatio

01What is this vulnerability?

Improper initialization of x87 and SSE floating-point configuration registers in the __scone_entry component of SCONE before 5.8.0 for Intel SGX allows a local attacker to compromise the execution integrity of floating-point operations in an enclave or access sensitive information via side-channel analysis.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2023-12-30T00:00:00.000Z
• Last modified: 2025-04-17T20:07:28.695Z

09References

• sconedocs.github.io — https://sconedocs.github.io/release5.7/
• jovanbulck.github.io — https://jovanbulck.github.io/files/acsac20-fpu.pdf
• www.intel.com — https://www.intel.com/content/www/us/en/developer/articles/technical/software-se…
• nvd.nist.gov — https://nvd.nist.gov/vuln/detail/CVE-2020-15107
• nvd.nist.gov — https://nvd.nist.gov/vuln/detail/CVE-2020-0561#vulnCurrentDescriptionTitle
• jovanbulck.github.io — https://jovanbulck.github.io/files/oakland24-pandora.pdf