What is CVE-2023-36109?

CVE-2023-36109 is a critical-severity vulnerability in Jerryscript, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-09-20.

How severe is CVE-2023-36109?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-36109 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Jerryscript

CVE-2023-36109

Buffer Overflow vulnerability in JerryScript version 3.0, allows remote attackers to execute arbitrary code via ecma_stringbuilder_append_raw component at /jerry-core/ecma/base/ecma-helpers-string.c.

Vulnerability class: Buffer Overflow

EPSS: 0.020 (78.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Jerryscript — versions 3.0
N/a — versions n/a

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Issue Tracking)
cve@mitre.org (Exploit)

Frequently asked questions

What is CVE-2023-36109?: CVE-2023-36109 is a critical-severity vulnerability in Jerryscript, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-09-20.
How severe is CVE-2023-36109?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-36109 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.