How severe is CVE-2021-46462?

CVE-2021-46462 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-46462 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46462?

CVE-2021-46462 affects F5 Njs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46462?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-46462 published?

CVE-2021-46462 was published on 2022-02-14 and last updated on 2026-06-17.

CVE-2021-46462

CVE-2021-46462 is a high-severity vulnerability in F5 Njs with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: F5 Njs
Published: 2022-02-14
Last modified: 2026-06-17

Description

njs through 0.7.1, used in NGINX, was discovered to contain a segmentation violation via njs_object_set_prototype in /src/njs_object.c.

Frequently asked questions

What is CVE-2021-46462?: njs through 0.7.1, used in NGINX, was discovered to contain a segmentation violation via njs_object_set_prototype in /src/njs_object.c.
How severe is CVE-2021-46462?: CVE-2021-46462 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-46462 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46462?: CVE-2021-46462 affects F5 Njs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46462?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-46462 published?: CVE-2021-46462 was published on 2022-02-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:f5:njs:*:*:*:*:*:*:*:*

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