How severe is CVE-2021-41751?

CVE-2021-41751 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-41751 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41751?

CVE-2021-41751 affects Jerryscript. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41751?

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

When was CVE-2021-41751 published?

CVE-2021-41751 was published on 2022-04-05 and last updated on 2026-06-17.

CVE-2021-41751

CVE-2021-41751 is a critical-severity vulnerability in Jerryscript with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Jerryscript
Published: 2022-04-05
Last modified: 2026-06-17

Description

Buffer overflow vulnerability in file ecma-builtin-array-prototype.c:909 in function ecma_builtin_array_prototype_object_slice in Jerryscript before commit e1ce7dd7271288be8c0c8136eea9107df73a8ce2 on Oct 20, 2021.

Frequently asked questions

What is CVE-2021-41751?: Buffer overflow vulnerability in file ecma-builtin-array-prototype.c:909 in function ecma_builtin_array_prototype_object_slice in Jerryscript before commit e1ce7dd7271288be8c0c8136eea9107df73a8ce2 on Oct 20, 2021.
How severe is CVE-2021-41751?: CVE-2021-41751 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-41751 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41751?: CVE-2021-41751 affects Jerryscript. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41751?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-41751 published?: CVE-2021-41751 was published on 2022-04-05 and last updated on 2026-06-17.

References

https://github.com/jerryscript-project/jerryscript/pull/4797

Affected products (1)

cpe:2.3:a:jerryscript:jerryscript:*:*:*:*:*:*:*:*

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