How severe is CVE-2022-27008?

CVE-2022-27008 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-2022-27008 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-2022-27008?

CVE-2022-27008 affects F5 Njs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-27008?

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-2022-27008 published?

CVE-2022-27008 was published on 2022-04-14 and last updated on 2026-06-17.

CVE-2022-27008

CVE-2022-27008 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. The underlying weakness is classified as CWE-120.

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
Weakness: CWE-120
Affected product: F5 Njs
Published: 2022-04-14
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2022-27008?: CVE-2022-27008 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-2022-27008 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-2022-27008?: CVE-2022-27008 affects F5 Njs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-27008?: 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-2022-27008 published?: CVE-2022-27008 was published on 2022-04-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:f5:njs:0.7.2:*:*:*:*:*:*:*

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