CVE-2021-43453 is a critical heap-based buffer overflow vulnerability affecting JerryScript 2.4.0 and earlier versions, specifically due to an out-of-bounds read in the parser_parse_for_statement_start function. With a CVSS score of 9.8, it allows for unauthenticated remote attackers to achieve high confidentiality, integrity, and availability impacts with low attack complexity. While there is no evidence of active exploitation, public exploit code, or inclusion in CISA's KEV catalog, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.4.0CPE matchmatch criteria | cpe:2.3:a:jerryscript:jerryscript:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.