CVE-2021-36218

Name: CVE-2021-36218
Creator: NVD / NIST
Published: 2021-09-27T14:15:08.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.52%

Last modified Jun 17, 2026

CVE-2021-36218 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in SKALE sgxwallet 1.58.3. sgx_disp_ippsAES_GCMEncrypt allows an out-of-bounds write, resulting in a segfault and compromised enclave. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

Description

An issue was discovered in SKALE sgxwallet 1.58.3. sgx_disp_ippsAES_GCMEncrypt allows an out-of-bounds write, resulting in a segfault and compromised enclave. This issue describes a buffer overflow, which was resolved prior to v1.77.0 and not reproducible in latest sgxwallet v1.77.0

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.52%

71.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Skale	Sgxwallet	1.58.3

References

https://github.com/skalenetwork/sgxwallet/commit/77425c862ad20cd270d42c54f3d63e1eb4e02195Patch, Third Party Advisory
https://github.com/skalenetwork/sgxwallet/releasesRelease Notes, Third Party Advisory
https://github.com/skalenetwork/sgxwallet/commit/77425c862ad20cd270d42c54f3d63e1eb4e02195Patch, Third Party Advisory
https://github.com/skalenetwork/sgxwallet/releasesRelease Notes, Third Party Advisory

Timeline

Published: Sep 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36218?

How severe is CVE-2021-36218?

CVE-2021-36218 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36218?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36218?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST