CVE-2021-43453

9.8 criticalEPSS 1.3%

Critical (9.8) in jerryscript jerryscript. EPSS 1.3% chance of exploitation in the next 30 days.

A Heap-based Buffer Overflow vulnerability exists in JerryScript 2.4.0 and prior versions via an out-of-bounds read in parser_parse_for_statement_start in the js-parser-statm.c file. This issue is similar to CVE-2020-29657.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)
CWE: CWE-125
Published: 2022-04-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

jerryscript:jerryscript

References

https://github.com/jerryscript-project/jerryscript/issues/4754
https://github.com/jerryscript-project/jerryscript/issues/4754

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