CVE-2021-43393 is a medium-severity vulnerability affecting STMicroelectronics STSAFE-J 1.1.4, J-SAFE3 1.2.5, and J-SIGN products, potentially allowing attackers to abuse ECDSA signature verification. With a CVSS score of 6.2, this local attack requires low complexity and can lead to high integrity impact, though confidentiality and availability are not affected. While the vulnerability is exploitable in specific configurations of STSAFE-J and J-SIGN, it does not impact J-SAFE3 EPASS BAC and EAC products. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.1.4CPE matchmatch criteria | cpe:2.3:o:st:stsafe-j_firmware:1.1.4:*:*:*:*:*:*:* | ||
1.2.5CPE matchmatch criteria | cpe:2.3:o:st:j-safe3_firmware:1.2.5:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.