What is CVE-2021-24044?

CVE-2021-24044 is a critical-severity vulnerability in Facebook Hermes, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 9.8/10. Published 2022-01-15.

How severe is CVE-2021-24044?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Facebook Hermes

CVE-2021-24044

By passing invalid javascript code where await and yield were called upon non-async and non-generator getter/setter functions, Hermes would invoke generator functions and error out on invalid await/yield positions. This could result in seg…

EPSS: 0.013 (66.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Facebook Hermes — versions 0.10.0, unspecified

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

cve-assign@fb.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-24044?: CVE-2021-24044 is a critical-severity vulnerability in Facebook Hermes, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 9.8/10. Published 2022-01-15.
How severe is CVE-2021-24044?: Critical severity. CVSS v3 base score is 9.8 out of 10.