CVE-2021-43083 is an unsigned integer underflow vulnerability affecting the C language implementation of Apache PLC4X (PLC4C) in its TCP transport. This flaw carries a high CVSS score of 8.8, indicating a severe impact on confidentiality, integrity, and availability, though it requires a user to connect to a malicious device. Despite its high severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.9.1CPE matchmatch criteria | cpe:2.3:a:apache:plc4x:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.