CVE-2021-34593 is a denial-of-service vulnerability affecting CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT versions prior to V2.4.7.56. An unauthenticated attacker can send crafted invalid requests over the network, leading to stopped PLC programs, memory leaks, or blocked communication for other clients. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable with low attack complexity and no user interaction required, resulting in a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in CISA's KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< fw20CPE matchmatch criteria | cpe:2.3:o:wago:750-8202_firmware:*:*:*:*:*:*:*:* | ||
< fw20CPE matchmatch criteria | cpe:2.3:o:wago:750-8203_firmware:*:*:*:*:*:*:*:* | ||
< fw20CPE matchmatch criteria | cpe:2.3:o:wago:750-8204_firmware:*:*:*:*:*:*:*:* | ||
< fw20CPE matchmatch criteria | cpe:2.3:o:wago:750-8206_firmware:*:*:*:*:*:*:*:* | ||
< fw20CPE matchmatch criteria | cpe:2.3:o:wago:750-8207_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
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.