What is CVE-2020-8935?

CVE-2020-8935 is a medium-severity vulnerability in Google Asylo, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2020-12-15.

How severe is CVE-2020-8935?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Buffer overflow in Google Asylo

CVE-2020-8935

An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allow an attacker to make an Ecall_restore function call to reallocate untrusted code and overwrite sections of the Enclave memory address. We recommend updating your library.

Vulnerability class: Buffer Overflow

Published 2020-12-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.001 (2.9th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Google Asylo
Google Llc Asylo — versions unspecified

Weakness classification (CWE)

References

github.com/google/asylo/commit/ed0926bff0e423cd122a18b3d2fc772817f66825 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8935?: CVE-2020-8935 is a medium-severity vulnerability in Google Asylo, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.3/10. Published 2020-12-15.
How severe is CVE-2020-8935?: Medium severity. CVSS v3 base score is 5.3 out of 10.