What is CVE-2022-27008?

CVE-2022-27008 is a high-severity vulnerability in F5 Njs, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2022-04-14.

How severe is CVE-2022-27008?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in F5 Njs

CVE-2022-27008

nginx njs 0.7.2 is vulnerable to Buffer Overflow. Type confused in Array.prototype.concat() when a slow array appended element is fast array.

Vulnerability class: Buffer Overflow

Published 2022-04-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: +0.000

Affected products

F5 Njs — versions 0.7.2

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/nginx/njs/issues/471 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/nginx/njs/commit/e673ae41a998d1391bd562edb2ed6d49db7cc716 (Patch, Third Party Advisory)
security.netapp.com/advisory/ntap-20220519-0008/ (Third Party Advisory)

Frequently asked questions

What is CVE-2022-27008?: CVE-2022-27008 is a high-severity vulnerability in F5 Njs, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.5/10. Published 2022-04-14.
How severe is CVE-2022-27008?: High severity. CVSS v3 base score is 7.5 out of 10.