What is CVE-2021-46461?

CVE-2021-46461 is a critical-severity vulnerability in nginx Njs, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2022-02-14.

How severe is CVE-2021-46461?

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

Buffer overflow in nginx Njs

CVE-2021-46461

njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.

Vulnerability class: Buffer Overflow

EPSS: 0.031 (86.5th 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

Nginx Njs
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46461?: CVE-2021-46461 is a critical-severity vulnerability in nginx Njs, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2022-02-14.
How severe is CVE-2021-46461?: Critical severity. CVSS v3 base score is 9.8 out of 10.