CVE-2021-43453

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-04-07 · updated 2026-06-17
Weakness: CWE-125

Description

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.

Affected products

JerryScript: through 2.4.0

References

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

Get alerted when CVE-2021-43453 or the next vulnerability affects your stack