What is CVE-2020-8944?

CVE-2020-8944 is a medium-severity vulnerability in Google Asylo, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2020-12-15.

How severe is CVE-2020-8944?

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

Buffer overflow in Google Asylo

CVE-2020-8944

An arbitrary memory write vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to ecall_restore using the attribute output which fails to check the range of a pointer. An attacker can use this pointer to write to arbitrary memory addresses including those within the secure enclave We recommend upgrading past commit 382da2b8b09cbf928668a2445efb778f76bd9c8a

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: 0.002 (4.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Google Asylo
Google Llc Asylo — versions unspecified

Weakness classification (CWE)

References

github.com/google/asylo/commit/382da2b8b09cbf928668a2445efb778f76bd9c8a (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8944?: CVE-2020-8944 is a medium-severity vulnerability in Google Asylo, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2020-12-15.
How severe is CVE-2020-8944?: Medium severity. CVSS v3 base score is 5.3 out of 10.